Talking about pets can be a lot of fun! While introducing the animals, talk about who owns a pet and what the names of their pets are. Another fun exercise would be to guess the animal. Act out something the animal would do and the first child to guess the animal gets a point!
Finally, after teaching the pet animals, why not try an animal craft to back up what they have learned? Check out my Pinterest for animal crafts that are suitable for kindergarten and preschool!