One splitting headache coming right up! These two head-butting muskox know what going head-to-head is better than just about anyone or anything. Whenever there's a disagreement, there's no other way they'd rather figure it out than by ramming their head into whatever's in their way. It ...

One angry Komodo dragon is scary enough. Put two of them together, lashing out at one another and it's a living vicious nightmare you want to stay as far away from as humanly possible. It's a good thing the onlookers are keeping their distance because this is one fight you want to let play out ...

Whatever set these two grizzly bears off must've been something pretty serious. Whether one stole the last salmon or what, things go from seemingly calm to an all-out throwdown between two furry powerhouses. Fortunately, as mad as they were, it looks like they expend all of their energy and ...

There's nothing quite like land-based shark fishing. From start to finish, it's a battle that can take some serious will to just keep fighting. That's especially true when what you're reeling in turns out to be a 14-foot-long monster hammerhead shark like this one right here! A Texas man and ...

These guys were awfully brave to get this close to a cottonmouth that was already in hunting mode after finding one sinking its fangs into a banded water snake while floating downstream. They found the two snakes wrapped up in a struggle while fishing off the banks and couldn't help but get some ...

Apparently, these two never heard that birds of a feather flock together. Whatever they're fighting over, it looks like they're planning on seeing it through to the bitter end. Either the turkey isn't a fan of how flashy this peacock is, or the peacock is trying to get a head start on helping ...

They weren't lying when they called this fight between a sloth bear and a tiger a "Clash of the Titans." Judging from how it looked at the beginning, we would've put money on the tiger to have ended this quickly and easily — we would've lost that bet.

It's no secret that mongooses are basically cobra killing machines. You wouldn't know it by looking at them, but these little guys are vicious hunters and a cobra's worst nightmare. From the instant the fight starts, it looks like the mongoose has the cobra on the ropes. While the cobra may look ...

If there's a video that perfectly sums up how much we hated for Christmas to be over as kids, this is it. It looks like this guy was trying to get rid of an old Christmas tree, but these two dogs weren't having it. The dogs waste no time in latching onto the tree while he's dragging it off and ...

One of the greatest things about drones is their ability to capture pictures and video of moments that would've been impossible to capture if it were just you and a camera. They offer a peek into moments like this fight between a wolf and a moose. Dan Nystedt captured the footage in Northern ...

Marvin Muller and Tiffany Corlis captured some incredible pictures and video after stumbling across a fight between a massive snake and a crocodile at Lake Moondarra near Mount Isa in northwest Queensland, Australia. "Pretty cool experience, not something you think you're going to see but I ...

Although this fight between a seal and an octopus lasted for about 20 minutes, it's clear it was a one-sided encounter. Conner Stapley captured footage of a seal manhandling an octopus while on a kayaking tour in Kaikoura, in New Zealand’s South Island, while leading a group of three kayakers. ...

Typically when we hear about an encounter between an insect and a snake, we'd assume it was the snake that came out victorious. That's not the case with this water bug that's as vicious as it is massive. The fight is caught by onlookers - one of whom apparently knows everything about insects - ...

You never know what's going to happen in nature. Even when you think you do, a surprise can be lurking right around the corner. This diver was in the middle of filming an epic fight between a red octopus and a swimmer crab during a late night dive. After nearly a minute of fighting, it looked ...