being a rescuer, i'm a huge advocate of altering animals. however, when i got my Hugo he wasn't neutered and i came on here and asked about the best age to neuter an older gsd (he was 1.5yrs when he got here in november last yr). i got ALOT of good information
. so i did some internet research on the info i got.
there's something i found out. hormonal development in young dogs, especially males it turns out, is extremely important both in emotional/mental and physical. it has immense effects on the bone thickness and strength, the breadth of the sternum and development of hip joints, surprisingly, in the growth plates. psychologically, and if you think about it it makes sense, the hormones really deal them a knock out blow. just like w/teenagers going thru puberty but in a real rushed spasm. if you remove those hormones too soon they never get to finish that and they get stuck right where they were. eventually they may come out of it, but they may stay right there too and you end up w/what could turn into a problem dog.
now, all the politically correct literature will tell you that you should get your animal altered asap, no matter what the consequences are. but you have to keep in mind that they are referring to people that are irresponsible owners, people that will let their animal run the street, those very animals that will end up at my house, or some other rescuer or shelter.
my dog Hugo, who i've decided to keep as my own will not be altered until he is 3yrs old. after having him to the vet, he has some growing to do across the sternum and some more growth in the spine to do, he has more muscle mass to put on, and a bit more height. he's got very heavy bone and i don't want to damage that. he's very much a puppy right now, and i want him to "be a man" in his mind before i do the deed. i will wait. there are no proven medical reports telling anyone that testicular cancer is anymore prevalent in later neutered males than in puppy neutered males. others will tell you different, ask them to show you the reports. there are reports showing just the opposite.
never neuter your pet because it's politically correct. it's always better to wait if you're educated and responsible. i have been RE-educated, thanks to this site.