I have a 4 and a half month old cocker spaniel/poodle mix, and he is just getting enough strength in his legs to start jumping onto things which he enjoys doing. How do I train him to not jump onto the couch or bed, unless he is called. He will chase after his squeaky toys and is highly motivated by food. Also, I had posted a question about biting earlier and his biting has reduced a lot, but when he is playing sometimes he bites my hand, I don’t know if it’s by accident because he’s excited and can’t control it or he’s doing it on purpose. Any suggestions?