Number 2 and 5 are my favourites, I like number 2 as its a good clean shot of the dog and the interaction of the handler and the dog in number 5.
Partial shots of the dogs face and one with drool ,does not do it for me. The one of the Black and White Husky with the deep blue eyes might be better to shoot it portrait and fill the frame with its face.
One tip if you get down to the dogs level when photographing them, it will give you different perspective.