To get a dog as a Pet in BitLife, you will need to get one from one of the options inside the Pets activity tab in the game.
Under pets, you can get a dog from either the pet store or a particular dog breeder that sells specific breeds of dogs.
Going with dog breeders might also be the best option for you, as there is a far more extensive selection of dogs and a wide range of stats per dog.
That said, if you want a dog from either a dog breeder or the pet store, click on either one of them and then find a dog. For the pet store, you'll need to search the list for one.
When you find one, just tap on them, and you will get an option to buy them. But for dog breeders, you will first need to select a breed you want and then tap on it.
After you tap on a breed of dogs from the list, you will need to select a dog from a list that falls under a breed of dogs.
Tapping on any of the dogs from the list will allow you to purchase them in the same way as pet store dogs.
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