I think education is the first step. Do your best to educate your mom and your grandpa. Maybe with books and online articles (positive ones of course) and then maybe introduce him to one of your animals.

Most people don't like them because they think they are something else. They think you have a "poisonous" snake that will grow to be 20ft long.

I think a lot of people don't like snakes right now because of all the florida stuff and the little girl dying.

Obviously at some point there wasn't a problem with you having the snakes or else they wouldn't have been there in the first place.