HI, THIS IS MY FIRST POSTING AS A MEMBER SO HI TO EVERYONE.  MY QUESTION IS WHEN IS THE BEST AGE TO NEUTER MY GREAT DANE MALE PUPPY? HE IS NOW FIVE MONTHS OLD AND TRIES CONSTANTLY TO HUMP MY FEMALE DANE AND IS ALWAYS SNIFFING HER REAR END, IF WE GET HIM NEUTERED WILL THIS CALM HIM DOWN ABIT.  MY FEMALE DANE HAS NOW STARTED TO HUMP HIM , IS THIS BECAUSE HE DOES IT TO HER.  SHE WAS SPADE ABOUT 3 MONTHS AGO.  HOPE YOU CAN HELP

Hi

Neutering will not necessarily stop this behaviour. He is still a very young puppy and a distraction away from the humping would be better :)

I would also get the vet to check out your bitch, she may have an infection if he is sniffing at her a lot.

Good luck with your boy - what colour is he?

C :)