Click on the animal treats vending machine and select “Purchase Pet Items”.The game has an “age up treat”, which you can purchase or get your Sim to craft themselves. Don’t worry! You CAN control their age using treats or cheats in the game! This is how: Age Up Pets with Treats Pets were added to the Sims 4 in The Sims 4: Cats & Dogs! We love our pets, but sometimes you want to choose when your pets age up instead of letting the game decide for you.