Can pets get pregnant on Sims 3?

Yes, cats can get pregnant on Sims 3. Fortunately, cats never accidentally have kittens. You must deliberately breed them. Also, like with dogs, you need a doghouse on your lot before you can breed. Dog houses are really pet houses. When two cats come out of their pet house, after they have courted, the female has the possibility of being pregnant. If she is, you will get a message telling you to prepare for kittens.