We got ours neutered and spayed, it's better for their health unless you're breeding them on a regular basis, ours are just pets, not breeding animals.
Twinkle's a purebred though
but she's got a wonky line in her fur which is why the breeder decided to sell her, because she'd be disqualified from shows for it...good woman, she's a doctor but she has loads of animals...she even had sheep at one point
people don't seem to keep sheep over here