Advertisement Is it possible for a male to develop tibial hooks before he matures and gets the boxing gloves? A lady in a pet store told me that she has had young males develop the spurs before they are mature and that I shouldn't believe everything I read on the internet! I never even said anything about the internet, just that I'd never heard that before! Anyhoo, just wondering if that is true or not. Also, at what size (species in question is E. campestratus) does the difference in abdomen shape become apparent?