Underage desexing.
Hyndman
Robert J
RJ
D000367:Age Factors; D000827:Animal Welfare; D000818:Animals; D002369:Castration / Q000662:veterinary*; D002415:Cats / Q000601:surgery*; D004285:Dogs / Q000601:surgery*; D005260:Female; D008297:Male; D011155:Population Control / Q000379:methods*; D012307:Risk Factors