Hi, my lovely (usually) puppy bites a lot. She's four month old Jack Russell. She's clearly a bright dog (she can sit, and leave on command, apart from when she's hanging off DDs trousers) and apart from this problem, is doing great.
We are experienced dog owners, but usually adopt older rescue dogs, so she's out first puppy.
When she bites, it's usually " things" not people, though she has bitten (adult) DD and her partner.
Is this normal at her age, or should we be concerned?