In The Sims 4, you create and customize people, giving them families and jobs and building their homes. Cats & Dogs adds pets to the mix. You can use the Create-a-Pet system to make custom dogs ...
You're now free to customize your kitty as you see fit ... into the "First Name" text box next to the plumbob in the upper-left corner. Unlike human Sims, pets do not need to be given a last name ...