We have a wonderful 3yr old, neutered red heeler. He’s wonderful with my daughter and the cats; and good in the house, sleeping beside my bed each night.
However, he is a redhead and Heeler, so can be a handful at times. While mostly good with the other dogs and cats, he arbitrarily becomes possessive about things like a certain dish or dog bed, and has snapped hard a few times at the smaller dogs, so far causing no injury but inciting a lot of fear.
The biggest problem is that if you don’t keep an eye on him while outside, he will chase and corner the horses then bite - not nip - their hind legs. He has left open wounds several times causing swelling and discomfort requiring soaking, medicating and bandaging, narrowly missing a vet visit and round of antibiotics.
He has been caught red handed and disciplined repeatedly, but this has not deterred him. The result being that he stays confined either to a kennel or inside with us, more than he should, which probably doesn’t help with his pentup aggression when he’s out. He trail rides along with the horses great, but we’re not always trail riding.
He’s a great dog, but I am afraid that maybe he needs to be at a home with a family who is home more than we are (we’re gone 12 hours out of the day with work) though we are outside lots during the evenings and on weekends. Ideally, I think he needs to go to someone with cattle. I’m afraid, one day our vigilance will slip and he’ll really cause a nasty, even irreversible injury to one of the horses.
My last resort before rehoming him may be a shock collar, which we have not tried. Do they really help?