I didn't make my own cats and dogs familiars for my Sims, but I did download some dogs off of the gallery. I downloaded a Wolf Link, and a kitsune fox, and I bred them together. Some of my favorites were ones that looked like the mom, but had their father's size. I bred the same two three times, and even though the offspring were similar, they were all different as well. I gave them to my mages as familiars afterwards.
Also, the first litter I have is on the Gallery, and one of the offspring from that family is mixed with a version of the second version the offspring in another family with their offspring.
