Noah's Mommy:

Actually Scooby loves to watch the hamsters running around. That's about the extent of his interest though. He sits by their cages and watches, smells, and watches some more.
When the hamsters are out, he ignores them! Just walks right by like there's nothing special going on. The hamsters don't seem to mind him either. They grew up with him watching so I guess they know they're safe.

You would think he would be more aggressive with them but I guess he's content to watch. Birds are another matter, he sits on the windowsill and meows his frustrations at them! lol