What is a vet?

Assalamualaikum wbt

Today, I taught my students about an interesting job; a vet

Induction activity:
Me: The clue is OCCUPATION. What is this job?

V _ _ _ _ _ _ _ _ _ _ N

 There were so many attempts but they did not able to guess the word until the last few letters

V E _ E R _ N A R _ A N

Me: It's VETERINARIAN! or you can also say Vet!
** a total silence**

Suddenly, one of my smart alec broke the silence...

Pertab Singh: Oh!!!! Yang makan sayur tu eh cikgu???

Me: Err....that's not VET, that's VEGETARIAN!
A vet is .............

(and the lesson went on well until the bell rang)