Mine have always been done at six months.
As far as marking, I don't think it is easy at all to break a dog of that once they start, particularly if he is an Alpha dog. I had a neutered Chihuahua that marked despite being done at 6 months, not all the time but often enough. Never could break him of it in 10 years time.
Your dog is small though so you may have to wait longer. What does your vet say?
Louise |