What happens when an herbivore decides it's going to eat a duck?  What happens when a bug decides it's going to eat a mammal?  These images seem unnatural to us, but they happen, sometimes without much fuss and sometimes with disturbing consequences.  To show how strange these instances can be, I've provided a list of the ten best incidents of animals eating other animals.

10) Spiders Eating Birds

The strange, trancelike elegy at the end along with the melancholy rock makes this one a softer blow.  The spider shown is a big as an adult's hand, and if a bird is caught in its strong nest it can say goodbye to life.  And for those of you who didn't think studying spiders was cool, well -- you haven't seen one eat a bird.

9) Spiders Eating Mice

Why does it bother me so much when an arachnid eats a mouse?  Because, as the commentary says:  "Look, he goes right for the skull!" (and presumably sucks out the brains)

8) Giant Centipede Eats Mouse

Not for the faint of heart.  This thing is probably about 10 inches long, and is a nimble navigator.

7) Centipede Eats Tarantula

This is creepy too, but with healthy commentary.  And an awesome attack.

6) Camel Spider Eats a Lizard 

Again, wrong way on the food chain.  The scariest part about this one to me is that the voice of the commentator isn’t shaken at all.  Camel spiders are native to Afghanistan, though, so he may just be a war-weathered soldier.  Plus, the Beatles play in the background as the giant bug gulps down a whole lizard.

5) Snake Eats Pig

Slowly but surely, he'll get it all in one bite.  This is kind of painful to watch if only because the pig looks too much like a person...

4) Cow Eats Baby Chicken

This one is totally unexpected.  I wonder what was going through the cow's mind... "He'll never guess what I'm about to do.  That chick is so fucked."   Let's just not think about how much this cow has been deprived of food to make it turn on other animals.  I thought cows liked to eat things that didn't move.

3) Fish Eats Mouse

This video was featured on the site before, but it had to be on the list, not just because of the fish eating a mouse, but because of the headbanger host, and the "see me eat a mouse for $1" sign. These mice are getting a raw deal.

2) Snake Eats a Whole Alligator

Watching a snake eat a mouse is cool; many people breed mice just so their snake can have food.  Even a mouse is generally larger than a snake's head, so obviously they can open their jaws really wide.  But how wide?  Wide enough to eat a fucking alligator.  This incident was not caught on tape, but ended interestingly.

The python fucking exploded!  Not simply died, or ripped open, but exploded!  It probably made a popping sound, too.  Look at that picture and notice how there is a 13ft long snake with a giant hole in the middle with a 6 foot alligator sticking out.  Look at it!  Holy shit!  Gotta love Florida!

1) Pelican Eats Pigeon

Uptight-looking British news reporter makes this even better.  I like the feigned face of disgust the news anchor makes after she watches it -- there's definitely a hint of laughter.

Doing it in one bite makes it funnier.  This got number one because of the one gulp the pelican makes, and the fact that they are both birds makes it kind of cool.  It looks awesome, too!

So, the next time you doubt the validity of your meat-eating habits, consider that you don't do such strange things as these animals.

Or do you?