I have a 3 year old labrador who is lovely and placid, and a week ago I took on a 5 year old border collie. I think I'm going to have to rehome him as he keeps biting. All week he has been nipping at people but today he's been worse. My 15 year old's boyfriend was around, and they were messing about on the settee, just being loud as kids are. The dog bit DD1's bf on the knee, launched himself up on the settee and bit him on the leg, then bit DD on the thigh and then her foot. He has left teeth marks on her foot, and big red marks on her thigh.
It's normally a fairly busy and noisy house as the kids' friends are always coming and going, and this seems to really aggravate the dog. Also my youngest is only 6 and I'm terrified the dog will bite her on the face or something. My son takes him for a long walk and a play in the park every day, he gets plenty of exercise...what should I do?