No, you cannot. However, if your cat is far too sick or cannot move, you can ask for a vet to visit the house and administer the injection there. Never attempt to euthanize the cat yourself, as you can easily cause much pain and suffering to the animal.
No, but due to the nature of mice to cuddle up when asleep, the other mouse will get sick as well.
yes
If a patient has become sick or injured overseas, additional arrangements and assistance may be required to bring them back home safely.
Possibly, yes. They occasionally canniblize.
It is not obligatory if the mouse was not infected.
You shouldn't feed pizza to a mouse, it has a lot of fat in it and it can make it sick.
No he/she mite get sick
gross but yes
Yes.
One bad thing about being a vet is examining sick animals each day. Another negative aspect is having to euthanize sick animals.
Yes.