Tam hasn't mastered doorknobs...thank goodness. But if a drawer can be pulled out, he'll open it. He wakes me up at night sometimes, loudly pulling 'em open and rifling through them. What he expects to find...I have no idea. And it's a good thing I don't have anything fancy, furniture wise...he sometimes uses his claws to grab the edge of a particularly stubborn drawer. Brat. It means I have to hide his fetch balls in odd places...I used to hide them in drawers at night, but he'll pull them out and drop one on my chest and demand a game at odd hours if he can find one.
Oh yeah, do I know about the fetch fanaticism. Every morning as I'm hurrying around getting ready for work, there's C.B. dropping a ball at my feet. It's hard to say no, so I'm often late to work. But since I'm the first into the office, who cares??
The other one does like to get into the lower kitchen cupboards and will sit there trying to get it open with the attendant noise that comes with it until he can get that door open. Then he disappears inside. Go figure.