Last fortnight my little 5kg pomsky has been attacked twice and had volatile behaviour towards it from a lot of dogs, even when minding his own business. He is 2 years and intact, but has been ill for a week or so. Is it possible he is secreting a different smell that is riling up other dogs and would it be due to the illness(diarreah mostly ) or the hormones due to being un neutered? I can't take another 30kg dog inflicting it's weight on mine-I'm petrified on walks.