The pup is 10 weeks mate and she was doing summat, playing what have ya and then this snarl, we've had her a fortnight and there has been no physical reprimanding. Now I don't know if she has caught something out the corner of her eye or what. She' doesn't go round snarling all the time but I'm guessing most 10 week old pups don't but 8t was just un nerving more than anything., didn't sit right