In humans, we don’t usually castrate them because it throws their hormones out of whack, and causes all kinds of issues, but wouldn’t that also be the case for some animals, since their hormones systems are fairly similar?
Why is it that that we remove the testicles entirely, rather than giving them vasectomies like we do for humans?
I know that dogs get health issues like osteoporosis, as well as many other ailments that humans are suffering from. However, most animals have shorter lifespans than humans and are unable to articulate that they are suffering (or even hiding it - a common survival instinct), which means it’s far less likely that illnesses are discovered.