I have a 7 year old Border Terrier who has been the sole dog in the household since birth. Just recently got the puppy and he is terrified and I mean absolutely terrified of him. Coupled with the shouting at the pup when it does something wrong he seems to have got the hump and thinks its him. Tried to lavish as m,much attention on him as possible but he just cowers like a wreck. Recently he has been getting more and more introverted which we think stems from where he had 2 discs in his back fused 18 months ago when they shattered. Sadly since the Op he hasn't been the same dog and is scared of his shadow even though he is the most cosseted dog alive.
Do you think he will become more accepting of the pup? Its been 10 days now and he's totally in his shell and only perks up when the pup is crated for bed.