I am not sure but they can get fleas
Yes wolves can catch some illnesses like rabies
AIDS
No, you cannot catch illnesses from cats and cats cannot catch our illnesses. They have a different immune system than we do. There are some illnesses that do cross the species barrier. They are called zoonoses. See Related links.
Generally no. There are a few types of illnesses shared between people and animals but a stomach virus isn't one of them. Pets have a natural body temperature of 101.5 so viruses and bacteria that thrive in our bodies can not do so in theirs and vis-versa. They have their own illnesses as we have ours. We can't give them a stomach flu or catch theirs.
a cold
I don't think so but pets can catch colds from humans.
Cancer is 1 illness pets can detect, as far as scientists know, only dogs can detect it.
Yes, veterinarians prevent animal illnesses mostly through vaccinations and encouraging a healthy lifestyle for the pets.
Yes. They can still catch diseases and/or illnesses.
Yes
yes
No you can't catch fish. SORRY