Aggressive Scottish Terrier
(Johannesburg, South Africa )
I have a 5 year old neutered Scottish Terrier male. I rescued another Scottish Terrier male that's not neutered but are very scared and just loveable. Why is the 5 year old aggressive towards the rescued Scottie? I had 4 Scottish Terriers, but 2 passed away, so it's not that he's not used to other dogs. Please help, I really don't want the rescued Scottie to feel threatened or get bit.