I have gotten into hatching, but now every Time I hatch I get my pet back. I checked this time and no neither pets are school only. This is my forth Trojan horse I have received and and I want to know how to stop this from happening.
There's no way to stop it. It's random chance as to which parent you'll get, aside from school only pets. My advise, is to just keep trying, eventually, you'll get what you're lookign for.