I tried looking up a way to get rid of one of my puppies. She isn't bad or anything, but I didn't realize that I had 6 Sims in my family (2 dogs, 2 cats, 2 people) so I could have a baby for my Sims. I noticed you cant sell pets like you could on previous pets games, probably because of the idea for in-game profitable mills for breeding and selling your animals. I don't know if you can put them up for adoption like on PC, and I also heard you could divide your families into different houses, or letting the social worker take them away (even though they would take all your animals).
The simplest thing I could think of, was using the Karma powers to do my bidding. So I ghostified the puppy (giving me a Karma debt, which luckily didn't backfire) and sent her to the Netherworld. I could have probably Transmogrified her into a Sim, but I still don't know if she would be a child or something I couldn't kick out of the house. Does anyone have any ideas, or tried this when getting rid of those accidental/excess animals they got during over breeding, or before they realized they had 6 pets/Sims already?