I have a six month old lab bitch. Wondered if anyone knew of any alternatives to spaying a bitch? I don't want to breed from her but my vets a reluctant to spay her unless medically necessary as she has a heart condition which puts her at a considerably higher risk of complications as a result of the anaesthetic. Wondered whether anyone had come across any contraceptives or tips for caring for an entire bitch. I want to be prepared before she has her first season.