Well, you have to set their age in Create-A-Pet. Then, click on the small image of a dog. Whether or not it is a small or large dog, you can only make it an elder or adult. Sorry, maxis doesn't want pre-puppy making. You have to do that yourself. If you know how to set the age of a sim, aging a dog should be a snap. Hope I helped!
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Pause the game and go to options and you should have: Pet Lifespan from Brief to immortal, if it's on immortal they won't age up. If it's on brief they should age up in a couple days. You could do that if you want and then when they aged up you can change it back to immortal if you want to keep it as a adult.
to change your sims age you can use boolprop testingcheatsEnabled true and then hold down shift and press on the trash can in front of the lot..you can also use this cheat on other objects (like the mail box!) and on other sims. just hold shift and click.
89
Yes, your sims have a life span which you can change the length of in options. They have different stages of life for a certain amount of time: baby toddler child teen young adult adult elder
You should be a teen to play the sims 3.