1. Peregrine falcon
   Golden eagle
2. Barn owl
   Bald eagle

The American bald eagle has several talons used to pluck fish out of the water or defend their territory against other birds. Female bald eagles have longer talons than their male counterparts, and the bird has been on the official seal of the United States since 1782.

1. Grizzly bear
   Kodiak bear
2. Polar bear
   Black bear

Grizzly bear claws have often been compared to Swiss Army knives and they can grow up to four inches long. Grizzlies use the claws to hook salmon, shred tree bark, build shelter and dig for rodents and insects.

1. Shrimp
   Crab
2. Lobster
   Seahorse

You don't want to get your finger stuck in a lobster claw because it can cause significant damage. The claw isn't sharp enough to chop your finger off, but it's strong enough to crush and damage the bone. One claw is for pinching and one is for crushing.

1. Honey badger
   Wolverine
2. Raccoon
   Tasmanian devil

Wolverines are built for cold weather and their claws are built like ice-climbing boots. The claws don't retract and wolverines use them for everything from climbing to digging. Because of this, they're not the sharpest claws, but are incredibly strong.

1. Kangaroo
   Koala
2. Wallaby
   Kinkiajou

A koala's claws are specially made for climbing and are long, sharp and curved. They also have grooming claws on their hind legs used to keep clean. The koala depends on its claws and they're specialized to help koalas thrive among eucalyptus trees in particular.

1. Golden eagle
   Flamingo
2. Cassowary
   Ostrich

These birds can reach six feet tall and weigh more than 100 pounds, making them a rather dangerous bird. They've been dubbed the most dangerous birds in the world and have been known to fight humans who threaten them.

1. Ostrich
   Golden eagle
2. Ostrich
   Harpy eagle

The harpy eagle is three feet long, weighs about 10 pounds and has four-inch long claws. To put that in perspective, a grizzly bear is more than six feet long, weighs about 700 pounds and has four-inch long claws.

1. Great horned owl
   Spectacled owl
2. Esotrix
   Barn owl

The great horned owl is most known for its feather tufts that resemble horns, and you've probably seen an image of this owl in a storybook or two. It takes 28 pounds of force to open the great horned owl's clenched talons when it decides to use them.

1. Alligator
   Crocodile
2. Gecko
   Komodo dragon

Almost all reptiles that have legs also have claws. Some geckos even have claws that retract like a cat's claws. Although alligators are considered apex predators in some parts, they don't use these claws to do any hunting or eating.

1. Dog
   Parrot
2. Kitten
   Rabbit

Kittens have some of the sharpest claws on the planet. They're so sharp that many pet owners declaw or dull their cat's claws as they grow older. Cats and kittens love to scratch and will regularly scratch things for a variety of reasons.

1. Tasmanian devil
   Honey badger
2. Beaver
   Wolverine

Beavers are known for building dams, and their claws are some of the most unique on Earth. Instead of fighting and hunting, the claws are made specifically for digging and building. They're dense and heavy, allowing beavers to dig vigorously.

1. Giant armadillo
   Goliath aardvark
2. Two-toed sloth
   Honey badger

The giant armadillo can weigh close to 75 pounds and is about three feet long. With claws close to eight inches long, the armadillo has some of the biggest claws on Earth in proportion to its body size. The claws are mostly used for digging.

1. Baboon
   Panda
2. Sloth
   Kinkajou

Sloths are known for being peaceful and slow tropical animals, so it is striking to see exactly how big their claws are. Both the two- and three-toed sloths have claws measuring about four inches long, and they're used for hanging and climbing.

1. Coconut crab
   Pistol shrimp
2. Lobster
   King crab

Anyone who has held a coconut in their hand knows just how hard it is to break its shell. The coconut crab gets its name from using its claws to break coconuts and eat the flesh. It can take several days, however, for a coconut crab to break a coconut shell.

1. Wombat
   Bat
2. Sloth
   Flying squirrel

Bats are found all over the world except for the poles and they are mammals that can fly better than some birds. Their paws have five fingers and only one or two claws.

1. Salamander
   Gecko
2. African clawed frog
   Poison dart frog

The African clawed frog is the only amphibian that has claws used to attack and eat prey as well as climb. The only other "clawed" frog is the wolverine frog, and its claws are made from bone instead of keratin.

1. Star-nosed mole
   Panda
2. Eagle
   Badger

The star-nosed mole is one of the weirder creatures you'll come across and its star-shaped nose is so striking most people don't notice just how long its claws are. These moles can barely see, but because of their snouts, they can detect prey and predator within milliseconds.

1. Giant otter
   Sea lion
2. Sea leopard
   Grizzly bear

Three species of otter don't have claws or have blunt claws, but all other species have rather sharp claws essential to their lifestyles. The giant otter is found in rivers of South America, and its webbed feet are equipped with sharp claws.

1. Kinkajou
   Wallaby
2. Wolverine
   Kangaroo

There are only a dozen or so herbivores in the entire animal kingdom to have claws, and kangaroos use them for defense. A kangaroo can hop and kick at the same time and it can get up to 45 mph as it makes an attack, and it will attack if it's threatened. Males also have bloody fights during mating season.

1. Leopard
   Lion
2. Panther
   Tiger

Lions don't have the longest or sharpest claws in the world, but when sprinting 50 mph, its 450-pound body doesn't need the sharpest claws on Earth to take down almost any prey it wants. It's an apex predator and also uses its claws to fight other lions.

1. Koala
   Panda
2. Wallaby
   Chinchilla

These bears native to central China can grow more than six feet long and weigh more than 200 pounds. Their giant paws are equipped with sharp claws that are used for tearing apart bamboo and climbing trees.

1. Komodo dragon
   Green iguana
2. Alligator
   Snapping turtle

This 10-foot long, 200-pound lizard can run faster than 12 mph and is only found on a handful of Indonesian islands. Its claws are sharp and strong enough for climbing, but adults are so big they rarely climb. Adult dragons use their claws for fighting.

1. Aardvark
   Tasmanian devil
2. Badger
   Wolverine

An aardvark's claws are specially designed for digging, and if they're running for their lives, they will try to dig and burrow themselves as a first resort. As a last resort, they'll lie on their back and kick their claws toward the enemy.

1. Cheetah
   Lynx
2. Lion
   Panther

Most cats have retractable or protractable claws, but the cheetah's claws are only partly retractable. They are always in use and it allows them to perform insanely agile moves at speeds as high as 75 mph.

1. Blue lobster
   Pistol shrimp
2. Bulldog ant
   Alaskan king crab

The pistol shrimp snaps its claw shut with so much power that water displacement creates a "gunshot" sound. The sound doesn't come from the claws snapping shut. It comes from the displacement, which creates a shot of water that stuns prey. These shrimp are so loud they affect military sonar readings.

1. Squirrel
   Badger
2. Wolverine
   Rabbit

Rabbits can hop up to 45 mph and are extremely agile when doing so. They depend on their claws for survival skills and they don't hunt. The claws are really strong and are mostly used for digging and defense.

1. House cat
   Crow
2. Raccoon
   Squirrel

Squirrels are expert climbers and are capable of doing incredible things while climbing almost any surface because of their claws designed to grip and stabilize. Their ankles can rotate 180 degrees, allowing them to grip and climb the most unique surfaces.

1. Civet
   Wallaby
2. Hyena
   Dingo

Hyenas are their own family of animal and can be heard laughing hysterically when fighting off others for food. Hyena claws aren't sharp or long and aren't used for hunting. They grab prey with their teeth and use their claws for agility while running.

1. Komodo dragon
   Iguana
2. Salamander
   Gecko

Iguanas are expert climbers and they use their claws mostly for climbing. They will use their tails to fend off attackers, but if that fails, they will resort to swiping with their claws. The claws can get pretty sharp, and pet iguanas commonly get their claws clipped for safety reasons.

1. Vulture
   Barn owl
2. Golden eagle
   Ostrich

The golden eagle's claws almost rival the harpy eagle's claws and are bigger than the bald eagle's. The golden eagle is one of the most prolific hunters in the world and is found all over the planet. It's illegal to own a golden eagle or any part of a golden eagle in America.

1. Peregrine falcon
   Barn owl
2. Harpy eagle
   Great horned owl

The peregrine falcon isn't the biggest bird in the sky and definitely doesn't have the longest talons, but with the ability to hit speeds of 220 mph, it is one of the deadliest in the sky. The bird has been a symbol of courage for centuries.

1. Ostrich
   Cassowary
2. Emu
   Golden eagle

At just two years old, a male ostrich can be nine feet tall. It can kill a human in a single kick and the bird is considered one of the most dangerous in the world. Although it can't fly, it can travel long distances and run close to 45 mph.

1. Kinkajou
   Wolverine
2. Fossa
   Civet

A fossa resembles dogs, cats, hyenas, marsupials and civets, making them one of the most unique animals on the planet. This carnivore can grow up to six feet in length and is an expert hunter and climber.

1. Lemur
   Baboon
2. Chimpanzee
   Gorilla

Primates are some of the only animals out there without claws, so some of them have what's called a grooming or toilet claw. It isn't used for climbing, digging, attacking, defending or eating, and is only used for grooming purposes. It's not as sharp as a claw, but not as flat as a fingernail.

1. Dingo
   Hyena
2. Wild dog
   Wolf

Canines attack with their teeth instead of their claws, unlike felines, so wolves don't use their claws for hunting purposes. They use claws the same way a domesticated dog does. They're rather blunt and ideal for digging.

1. Emu
   Bearded vulture
2. Parrot
   Ostrich

The bearded vulture is found in Asia and Africa and has a unique diet. It eats bone marrow, but its claws and beak aren't strong enough to crack open bones, so it grabs a bone, flies high in the sky and drops it onto a rock repeatedly until it cracks open.

1. Ostrich
   Flamingo
2. Cassowary
   Emu

Emus are very closely related to ostriches, but ostriches have two toes and can grow up to nine feet tall, while emus grow up to six feet tall and have three toes. Both are two of the most dangerous birds in the world, and their attacks are powerful enough to prove fatal for humans.

1. Snapping turtle
   Gecko
2. Crocodile
   Iguana

Snapping turtles have claws that are about as long and sharp as a dog's and they are very useful for digging, but when it comes to attacking, defending or eating, they're next to useless. The turtle's arms are too weak to swipe its claws with any significant force.

1. Porcupine
   Wolverine
2. Aardvark
   Badger

A porcupine's claws are strong enough to climb and rip bark from trees, but they're not as sharp as the thousands of quills covering its body. The quills will almost always pierce skin and are the animal's No. 1 line of defense.

1. Squirrel
   Skunk
2. Badger
   Raccoon

A skunk has sharp and strong claws used for digging and climbing, but its primary defense tactic is the vicious odor it can spray up to 10 feet with sniper-like accuracy. The odor is so powerful the human nose can smell it 3.5 miles away.