Very nice, shared it on my game page, hope you don't mind. Animated buttons might be a slight improvement. Is it normal the bear responds quite slow to the controls? The timer doesn't seem to do anything, what's it's purpose?
Short, disturbing, generally okay puzzles! Just needs to have default audio on for browser, and have it fixed to a certain resolution if you're going to be implementing puzzles that require solutions that will be off-screen for certain aspect ratios.