Knut the polar bear is "definitely displaying behavioral problems," according to PETA scientists who point to Knut's swaying back and forth, imitating picture-taking tourists, and having "panic attacks." A Berlin Zoo rep say this is "ridiculous." [AFP via Newser]
The sea otters that hang out around the Monterey Bay Aquarium swim up to the people with cameras, even when you're behind glass and can't toss food to them. And they're not caged.
Any animal in a zoo is going to behave differently than in the wild. Wild animals in stressed environments will behave differently from wild animals in a safe environment. That's life.