What do you do when you look after someone. You **** for them. What do you do to a dog? You *** a dog. Plural of that. (4, of, 4)

Cryptic text: 
What do you do when you look after someone. You **** for them. What do you do to a dog? You *** a dog. Plural of that.
Format of answer: 
(4, of, 4)