Hi I just wondered if anyone could tell me if this is normal please. When I walk Georgie she can be fine walking along on a long extendable lead but then she will start jumping up at the back of my legs and biting and also crouching down in front of my feet so I can't walk . She also gets very hyper and when you pick her up for any reason on the walk , say if her lead is tangled she growls and bites . She also is still very bitey at home even though we put her away from us when she bites for a few minutes.she is getting two 25 mins walks a day as recommended by a puppy trainer at her class. She gets plenty of sleep and play. Is this just puppy being a puppy or have I got a problem . It does make walking her not so much fun so I would like to stop her doing it. Thanks so for any help .