Aggressive Dobermen, Rotweiller, Great Dane Puppy Mix

by Liana
(Newcastle Ontario)

My brother's puppy (about 3 months old) is very aggressive. He barks very loud at you, lunging at you to bite. If you say no he does'nt stop. He jumps up on everybody including small children. I don't trust this dog at all. He growls and shows his teeth when you say no.

They let him up on there furniture and if they give him a treat, they can't take it away or he will even try to bite them and growl. The dog is a beautiful puppy with such potential. They have him in obedience classes so he can sit and stay and come but the aggression is not taken care of.

Nobody in the family mentions it because they don't want any feelings hurt but in the mean time I have 3 children I am worried about.

I have been asked to watch the dog for 2 weeks while they go away and as a dog lover I have said yes. I have a 10 year old german shepherd who is a wonderfully behaved female. I have never had to worry about anything like this with her and she is fine with the pup. The dog is well exercised and has a lot of attention.

What kind of steps should be taken before someone gets hurt? Please help me. Thank You