Field/specialties with the least amount of euthanasia?

Hi everyone,

I would like to hear about some of the areas in veterinary medicine one can work in that do not require a lot of euthanasia procedures. I don't want this to become a debate about euthanasia. I understand it can be a gift in an animals last moments of suffering. I am simply curious if there are certain fields that require you to euthanize far less than general practice or emergency.

I am very interested in zoo medicine.

I am also interested in rehab for animals. Do any of...

Field/specialties with the least amount of euthanasia?

Field/specialties with the least amount of euthanasia?