No but it is advised.
yes it is illegal in some places.
A dog can be neutered at any age after 6 months.
The risk of a dog developing certain types of cancer is reduced if the dog is neutered.
A neutered male dog is often referred to as a "neutered male" or simply a "neutered dog." Neutering is a surgical procedure that removes the testicles of a male dog to prevent reproduction.
The sterile dog can not cause/have puppies, either because it has been spayed/neutered, or because of genetic issues.
no
no
a neutered dog
Your dog
no
No
Yes. A neuter dog's penis is still intact, and that is what causes the tying, although neutered dogs generally don't have the drive to do so.
He will eventually, my dog is six and he was neutered. Give it a couple of weeks.