Question: how long does it take for a cat to have kittens in sims 4?
Answer: Choose the right partner for your pet to mate with. If the woohoo was successful you'll get a message a few hours after they mated if they are expecting a kitten or puppy. It doesn't matter what breeds they are as long if it's the same species. In about 2 days you'll get a message they're about to give birth.