I got just what I wanted! ONE puppy!
It's a female, and she looks a lot like her father who is a husky, but she also has her mothers brown colouring in the parts that are supposed to be black. By the way, heres a tip to become friends with grim fast (You MUST have a pet that is loyal or very friendly to the sim who you kill) Kill a sim, then, try to get a pet to save the ghost, and then, if the pet suceeds, get a sim (or the ghost) to do friendly interactions with him as much as possible if he stays briefly, and you may get him as a friend (I learnt that he has the "neat" trait-who would've guessed
?).