But several trainers said tourists were unaware that sometimes the animals turned aggressive.

Cochenour wasn't quite as relaxed, but he hadn't turned aggressive, either.

"Now they are turning very aggressive against the Serbs," he said.

In the past few days, reporters, frustrated by endless photo opportunities, have turned even more aggressive.

Their talk turns aggressive and Evan tells her to leave the store.

Their celebration turned aggressive, in contrast to the peaceful protests held by some of them a few months earlier.

However, it all gets too much for her and she turns aggressive towards Carley.

Like a jolly drunk in a bar, it can turn suddenly aggressive.

Some of these people have turned aggressive when visitors declined their services.

And if his bees did turn aggressive, he'd probably want to suppress the news.