Euthanasia may be
defined as ‘painless killing to relieve suffering’. Veterinary surgeons and
veterinary nurses should be aware that these events are often highly
emotionally charged. In these circumstances, small actions and/or omissions can
take on a disproportionate level of importance. It is recommended that all
practice staff involved in euthanasia are fully trained and a planned,
rehearsed and coordinated approach is taken.
Euthanasia is
not, in law, an act of veterinary surgery, and may be carried out by anyone
provided that it is carried out humanely. No veterinary surgeon is obliged to
kill a healthy animal unless required to do so under statutory powers as part
of their conditions of employment. Veterinary surgeons do, however, have the
privilege of being able to relieve an animal's suffering in this way in
appropriate cases.
Generally, only
veterinary surgeons and veterinary nurses acting under their direction and in
accordance with Schedule 3 of the Veterinary Surgeons Act, have access to the controlled
drugs often used to carry out the euthanasia of animals. An exception to this
is the use of Pentobarbitone by RSPCA Inspectors in England and Wales for the
euthanasia of wild animals.
The American
Veterinary Medical Association and the Humane Society of the United States
agree that an intravenous injection of sodium pentobarbital administered by a
trained professional is the kindest, most compassionate method of euthanizing
animals. However, occasionally (rarely), animal euthanasia may be performed
using alternative methods to pentobarbitone injection. Euthanasia can be
performed on an animal via the administration of large volumes of potassium
chloride: this causes the animal's blood potassium levels to rise to critical
levels, resulting in the animal dying from heart arrhythmia (sort of like a
fatal, severe heart palpitation in people). Because potassium chloride
injection is painful, the animal is normally placed under a general anaesthetic
before the solution is injected. Some euthanasias may even be performed using
such means as shooting (euthanasia by gunshot); captive bolt pistol (a form of
shooting that does not involve a bullet); gassing (carbon monoxide or carbon
dioxide); decapitation; neck-breaking (cervical dislocation); throat-cutting
(exsanguination) and electrocution. None of these alternative euthanasia
methods is generally used in the putting down of domestic pets (most are far
too distressing for owners to watch), however, shooting, potassium chloride
administration and captive bolt euthanasia may sometimes be used in the humane
euthanasia of horses and livestock animals. Gassing, decapitation and
electrocution are more likely to be used in the killing of poultry or pigs for
human consumption, however, this would technically be termed slaughter rather
than euthanasia.
There is list of valid reasons for animal euthanasia.
1. The animal is suffering from a terminal illness that
medical or surgical therapy can no longer relieve or help:
The relief of pain and suffering is probably the most common reason owners have for euthanasing a beloved pet. Because animals are now living long enough (just like people) to die slowly by degrees from chronic, incurable, sometimes-painful illnesses like cancer, renal disease and heart failure, it is becoming very common for owners to have to make this choice about what is kindest for their terminally ill pets.
The relief of pain and suffering is probably the most common reason owners have for euthanasing a beloved pet. Because animals are now living long enough (just like people) to die slowly by degrees from chronic, incurable, sometimes-painful illnesses like cancer, renal disease and heart failure, it is becoming very common for owners to have to make this choice about what is kindest for their terminally ill pets.
2.The animal is suffering from a severe illness whereby
survival and recovery is possible, but of minimal likelihood, and the animal is
likely to go through significant pain and suffering while attempts are made to
correct the problem:
Because animals, unlike humans, are unable to give any consent about the procedures that are performed on them, performing a large, painful surgical procedure on an animal or exposing that animal to long periods of severe illness, hospitalization stress and repeated medical procedures, in the remote chance that there will be recovery, must be weighed up very carefully. Human patients have a choice about how much pain they are willing to suffer for the remote chance of a cure and they also have a better cognitive understanding of what will be included in that care (prolonged hospitalisation, the use of ventilatory assistance, nausea-inducing medications and so on). Animals, on the other hand, do not have this understanding and so we (vets and owners) are the ones that must act on their behalf and in their best interests. Sometimes the pain and suffering involved in the care and attempted cure of an animal patient is simply not worth the very small chance there will be of a good outcome. This is a valid reason for an animal to be put out of its misery.
Because animals, unlike humans, are unable to give any consent about the procedures that are performed on them, performing a large, painful surgical procedure on an animal or exposing that animal to long periods of severe illness, hospitalization stress and repeated medical procedures, in the remote chance that there will be recovery, must be weighed up very carefully. Human patients have a choice about how much pain they are willing to suffer for the remote chance of a cure and they also have a better cognitive understanding of what will be included in that care (prolonged hospitalisation, the use of ventilatory assistance, nausea-inducing medications and so on). Animals, on the other hand, do not have this understanding and so we (vets and owners) are the ones that must act on their behalf and in their best interests. Sometimes the pain and suffering involved in the care and attempted cure of an animal patient is simply not worth the very small chance there will be of a good outcome. This is a valid reason for an animal to be put out of its misery.
3. The pet has a chronic, manageable illness requiring a
lot of medication (e.g. many pills and needles), regular hospital stays and
frequent testing and veterinary check-ups to manage it, but the animal is
behaviorally and emotionally ill-equipped to cope and gets far too distressed
by all of the procedures to keep on having them done over and over again for
the rest of its life.
As mentioned in the above section, pets can not give their consent for any of the things that we do to them (e.g. surgery, chemotherapy, diabetes therapy). Some animals with long-term manageable medical conditions such as diabetes and chronic renal failure become so fed up with being in hospital and being needled for blood or fluids or medication administration all the time that they become savagely aggressive and needle shy and require a vet to sedate them or anesthetize them just to do any little thing with them.
As mentioned in the above section, pets can not give their consent for any of the things that we do to them (e.g. surgery, chemotherapy, diabetes therapy). Some animals with long-term manageable medical conditions such as diabetes and chronic renal failure become so fed up with being in hospital and being needled for blood or fluids or medication administration all the time that they become savagely aggressive and needle shy and require a vet to sedate them or anesthetize them just to do any little thing with them.
4. The pet has a severe, chronic disease where death from
the disease itself is unlikely, but drugs are no longer helping the pet with
its pain or mobility.There are certain chronic disease conditions whereby the animal is unlikely to die as a result of the condition per se, but is in such severe, chronic, continuous pain or so debilitated (e.g. unable to move very far, unable to stand up) or so unable to maintain its hygiene and dignity that it can no longer be said to have any decent quality of life. In these cases, euthanasia is a viable option.
5. The animal is exhibiting severe aggression.
Aggression, particularly regularly-occurring, non-provoked aggression, in dogs and cats and even rabbits, horses and livestock animals is a very valid reason for destroying these animals. This aggression may be towards people, other pets in the household or other animals outside of the household (e.g. livestock killers).
Aggression, particularly regularly-occurring, non-provoked aggression, in dogs and cats and even rabbits, horses and livestock animals is a very valid reason for destroying these animals. This aggression may be towards people, other pets in the household or other animals outside of the household (e.g. livestock killers).
6. The animal has a severe behavioural condition that has
not responded to veterinary and/or behavioural modification therapies:
Some forms of behavioural disturbance are so severe that they are not conducive to a pet remaining in a household. Examples include: pets that insist upon toileting all over the house; pets that bark all the time; pets that display severe aggression or guarding tendencies; pets with severe separation anxiety that results in them regularly destroying the household in your absence (scratching down walls and doors etc.) and fence-jumper pets that constantly escape from their yards and roam. If these behaviors persist despite veterinary attention and behaviouralist consultation and all of your best efforts at re-training the animal and altering its environment to suit (e.g. building better fences), then euthanasia may well be the only solution to the problem. It is probably not fair to try to rehome animals with severe behavioural defects because this rehoming will just place stress on an already stressed animal and pass the problem on to another person (certainly you should warn the potential owner about the problem before passing the pet on).
Some forms of behavioural disturbance are so severe that they are not conducive to a pet remaining in a household. Examples include: pets that insist upon toileting all over the house; pets that bark all the time; pets that display severe aggression or guarding tendencies; pets with severe separation anxiety that results in them regularly destroying the household in your absence (scratching down walls and doors etc.) and fence-jumper pets that constantly escape from their yards and roam. If these behaviors persist despite veterinary attention and behaviouralist consultation and all of your best efforts at re-training the animal and altering its environment to suit (e.g. building better fences), then euthanasia may well be the only solution to the problem. It is probably not fair to try to rehome animals with severe behavioural defects because this rehoming will just place stress on an already stressed animal and pass the problem on to another person (certainly you should warn the potential owner about the problem before passing the pet on).
7. Heard health and disease eradication programs:
Selective euthanasia is sometimes used in breeding colonies, in addition to desexing, as a means of eradicating genetic diseases or negative traits. Whether this is a humane or valid thing to do really depends on the nature of the defect itself. Euthanasia of animals to remove defects that will be detrimental to the survival of that animal, breed or species may well be warranted (e.g. the euthanasia of Dobermann pinchers with severe von Willebrand's disease or young German Shepherds with severe hemophilia - both genetically-spread blood clotting disorders). Euthanasia of animals because their coat pattern is no good in the show ring is not warranted: these animals can be desexed and sold 'pet-only' to a nice home.
The use of euthanasia as a means of eradicating infectious diseases (especially highly-contagious diseases and/or highly environmentally-resistant diseases) in a large animal population such as a shelter, breeding or animal production colony is often done. For example, litters of puppies afflicted with canine parvovirus are typically euthanased by most shelters, rather than being treated, because the prognosis is so guarded and the risk of contaminating the entire facility (and thus killing other dogs) so high. Sometimes the sacrifice of some is required for the greater good of the rest.
Selective euthanasia is sometimes used in breeding colonies, in addition to desexing, as a means of eradicating genetic diseases or negative traits. Whether this is a humane or valid thing to do really depends on the nature of the defect itself. Euthanasia of animals to remove defects that will be detrimental to the survival of that animal, breed or species may well be warranted (e.g. the euthanasia of Dobermann pinchers with severe von Willebrand's disease or young German Shepherds with severe hemophilia - both genetically-spread blood clotting disorders). Euthanasia of animals because their coat pattern is no good in the show ring is not warranted: these animals can be desexed and sold 'pet-only' to a nice home.
The use of euthanasia as a means of eradicating infectious diseases (especially highly-contagious diseases and/or highly environmentally-resistant diseases) in a large animal population such as a shelter, breeding or animal production colony is often done. For example, litters of puppies afflicted with canine parvovirus are typically euthanased by most shelters, rather than being treated, because the prognosis is so guarded and the risk of contaminating the entire facility (and thus killing other dogs) so high. Sometimes the sacrifice of some is required for the greater good of the rest.
8. Notifiable diseases of high risk to human lives,
animal lives and the economy:
Animals that contract diseases, normally infectious diseases, which are of a high safety risk to man and other animals (e.g. rabies, bird flu, Anthrax) are generally put to sleep. Animal herds that contract exotic diseases that may or may not necessarily be fatal, but which are of massive economic consequence to the affected country (e.g. foot and mouth, Newcastle disease virus (NDV), Blue Tongue Virus and many more) are usually culled, along with the animals on surrounding farms, to preserve the country's livestock and animal production and export industries.
9. Financial euthanasia - the pet has a life-threatening and/or costly-to-treat disease and the owner simply cannot afford life-saving surgical or medical treatment:
The concept of financial euthanasia is probably the one reason given for euthanasia where peoples' opinions are most polarised and where vets and their clients most commonly clash. Some people consider finances to be a completely inexcusable ground for killing a pet and are outraged that vets will not provide services for free and/or that non-financial owners will even consider this option instead of going into debt for their animals. Other people and most veterinarians consider financial limitations to be a perfectly reasonable grounds for euthanasia of an animal (how reasonable we think it is does depend on the situation.
Animals that contract diseases, normally infectious diseases, which are of a high safety risk to man and other animals (e.g. rabies, bird flu, Anthrax) are generally put to sleep. Animal herds that contract exotic diseases that may or may not necessarily be fatal, but which are of massive economic consequence to the affected country (e.g. foot and mouth, Newcastle disease virus (NDV), Blue Tongue Virus and many more) are usually culled, along with the animals on surrounding farms, to preserve the country's livestock and animal production and export industries.
9. Financial euthanasia - the pet has a life-threatening and/or costly-to-treat disease and the owner simply cannot afford life-saving surgical or medical treatment:
The concept of financial euthanasia is probably the one reason given for euthanasia where peoples' opinions are most polarised and where vets and their clients most commonly clash. Some people consider finances to be a completely inexcusable ground for killing a pet and are outraged that vets will not provide services for free and/or that non-financial owners will even consider this option instead of going into debt for their animals. Other people and most veterinarians consider financial limitations to be a perfectly reasonable grounds for euthanasia of an animal (how reasonable we think it is does depend on the situation.
Often, both
veterinary surgeon and owner face difficulties during decision making on
euthanizing the animals. Veterinary surgeons may face difficulties when an
owner wants to have a perfectly healthy or treatable animal destroyed, or when
an owner wishes to keep an animal alive in circumstances where euthanasia would
be the kindest course of action.
The veterinary
surgeon's primary obligation is to relieve the suffering of an animal, but
account must be taken not only of the animal's condition, but also the owner's
wishes and circumstances. To refuse an owner's request for euthanasia may add
to the owner's distress and could be deleterious to the welfare of the animal.
Where, in all conscience, a veterinary surgeon cannot accede to a client's
request for euthanasia, he or she should recognise the extreme sensitivity of
the situation and make sympathetic efforts to direct the client to alternative
sources of advice.
Where the reason
for a request for euthanasia is the inability of the client to pay for private
treatment, it may be appropriate to make known the options and eligibility for
charitable assistance or referral for charitable treatment.
Where a veterinary
surgeon is concerned about an owner's refusal to consent to euthanasia,
veterinary surgeons can only advise their clients and act in accordance with
their professional judgement. Where a veterinary surgeon is concerned that an
animal's welfare is compromised because of an owner's refusal to allow
euthanasia, a veterinary surgeon may take steps to resolve the situation, for
example, an initial step could be to seek another veterinary opinion for the
client, potentially by telephone.
In a nutshell,
animal euthanasia is ethical only if it fulfill any one of the listed valid
reason. Should the animal be euthanized? The decision could only be made best
with the mutual understanding and cooperation from both the owner and
veterinary surgeon.
O’Meara, Shauna. (2008). Time to say goodbye: A Practical Guide to Pet Euthanasia (Having your pet put down). www.pet-informed-veterinary-advice-online.com.
Euthanasia of animals. (2012). Royal College of Veterinary Surgeons. https://www.rcvs.org.uk/advice-and-guidance/code-of-professional-conduct-for-veterinary-surgeons/supporting-guidance/euthanasia-of-animals/
Euthanasia. (2013). People for the Ethical Treatment of Animals. http://www.peta.org/issues/companion-animals/euthanasia.aspx











