Very naughty Cocker Spaniel

Question
Hi Delores, I've emailed before about my dog Poppy. She is a Red Cocker Spaniel who i adopted at twenty weeks as i wanted a second dog and a companion for my 2 year old Schnauzer. She is now 10 months old and not much better than she was the last time i contacted you. Don't get me wrong i love her as she is my dog but i don't 'like' her much. She is very possessive over toys and is just absolutely foul to my other dog stealing every toy in sight and piling them up in front of her even though she can only play with one at a time, leaving my other gentle little dog quite crestfallen. No matter how many times i ask her to get off the sofa and reward her when 4 paws are on the floor she persists in bounding all over it whenever she pleases. She persists in stealing all the socks off the radiators and ripping them to shreds and i know she knows she is doing wrong my the way she looks at me if i catch her doing it. All in all she has no discipline regardless of my consistant correction and attempts at training. She will not do any thing other than sit on command. She is hyperactive and she divides her time between fighting intermittently with my Schanuzer, playing with her toys and constantly sniffing around for something to steal and tear to shreads. If she were a child i would be quite horrified by her behaviour. Have i just got a bad dog or is this 'puppy' behaviour that she will grow out of? I enrolled her in puppy classes which she completed and have involved a Barkbusters trainer to help but nothing is getting through. I am at my wits end she is just exhausting and only a pleasure to own when she finally flops in the evenings :-/ Any advice greatly appreciated. Thank you in advance.

Answer
How much exercise does Poppy get?  Far too many behavioral issues are rooted in boredom and pent up energy.

And yes, this is typical of her age.  Just ONE day take her out for a good hour long run and see what a difference it makes.  A tired dog is a good dog.  Take her to a dog park and let her run herself out.

I'm wondering what your trainers have said.  They're really there to train you, not your dog :)  It's up to you to learn from them and "do the work" on a daily basis.
Delores