Lhasa Apso attacks puppies at dog run
My friend has 2 Lhasa Apsos - one female and one male.
The male is the trouble maker.
He's maybe 4 or 5.
He always seems to attack puppies or young dogs.
He's ok with small dogs, big dogs, whatever, generally.
It seems to be the young factor.
My friend loves the dog run and doesn't want to stop coming.
Any suggestions for how I can help her train him?