Those are the same metal non tip bowls I use for my problem snakes. I have one that will climb in any bowl but those. For some reason he doesn't like sitting in them. One tip, if you use paper on the bottle don't put it on top of paper. I have some that go under the paper and can then tip those. I cut the corner out and place them directly on the tub for those trouble makers. Actually, the only way they have ever spilled is because I left them on the paper and the snake was able to flip them