I agree with that, Humphrey didn't like being picked up at all. I don't know if the biting and ripping things is frustration, Humphrey (13 months) still does this in the garden, I think its more just what Cockers do!

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Distraction, swapping the booty for something else, practising the "drop" or "leave" command and games that offer some mental stimulation can all help, although I have to admit I still have to resort to taking things away now and again if he's got something bad and I need to react quickly, but on the whole, I do try and deal with it without force, its always better to try and train them to stop what they're doing voluntarily. (That's the theory anyway!!

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Good luck!