Mean and Agressive Lhasa Apso

Q
How do I socialize a 6 year old mean and agressive Lhasa Apso?He is so mean to my other Bulldog puppy, and he hates kids too. He’s unpredictable.
A
He is very likely asserting his authority on your other dog and children. You have to make it clear to him that it is not his place to [...]