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Digital Inquiry - Claws

Last updated 7 months ago
9 questions

VIDEO: Claws- Adaptations and Exceptions


Learn about animal adaptations and exceptions from the ambassador of the San Diego Zoo as he highlights the different kinds of animal claws and their uses.
1

Drag each animal to the matching way they use their claws.

  • Meerkat
  • Grizzly Bear
  • Koala
  • skunk
  • Digging
  • Climbing
1

TEXT: Applause for Claws

Animal claws are specialized for the tasks that each animal needs for survival in its environment.

Polar bears live in icy Arctic areas. Sharp, curved claws help grab onto the ice to keep the bears from sliding. They also use their claws to grip and tear apart their prey.

Koalas of Australia live in trees and eat only eucalyptus leaves. Their short, sharp, hooked claws are good for climbing.

Digging animals have long claws with hooked ends. This shape can move a lot of dirt, sand, or ice.

Grizzly bears dig for food: insects, roots, and rodents. Grizzlies also dig dens to shelter in during cold months.

A dog’s claws are always out and are blunt on the ends rather than sharp. These kinds of claws act like cleats on a sport shoe to grab into the ground and provide traction when running.

The African Cheetah has claws that dig into the ground, helping the cheetah accelerate quickly and maintain stability at high speeds.

How do these animals use their claws?

Grip prey
Climbing
Traction
Digging
Polar Bears
Koalas
Grizzly Bears
Dogs
African Cheetah

Fact Sheet: Three-Banded Armadillo

1
The Three-Banded Armadillo use its __________ claws to __________ into __________. The claws are also used to __________ to snack on __________.

Article: The Two-Toed Sloth: Structures and Functions

The two-toed sloth, scientifically known as Choloepus didactylus, is a fascinating creature native to the rainforests of Central and South America. These sloths are known for their slow movements and unique adaptations that allow them to thrive in their arboreal habitats.

Physical Structures

  1. Limbs and Claws: Two-toed sloths have long limbs with two prominent claws on each front foot and three on each hind foot. These claws are essential for gripping branches and hanging upside down, which is their primary mode of locomotion.
  2. Fur: The fur of a two-toed sloth grows in the opposite direction compared to most mammals. This adaptation helps rainwater run off their bodies when they are hanging upside down. Additionally, their fur often hosts algae, which provides camouflage by giving the sloth a greenish tint.
  3. Musculature: Despite their slow movements, two-toed sloths have strong muscles, particularly in their limbs, which allow them to hang and move through the trees with ease.
  4. Digestive System: Sloths have a complex, multi-chambered stomach that allows them to digest tough leaves. This slow digestion process can take up to a month to complete.
  5. Skeleton: The skeletal structure of two-toed sloths is adapted for their unique lifestyle. Their bones are dense and robust, providing support for their hanging posture.

Functions

  1. Locomotion: Two-toed sloths move primarily by hanging upside down from branches. This method of locomotion is energy-efficient and helps them avoid predators.
  2. Diet and Digestion: Their diet consists mainly of leaves, fruits, and flowers. The slow digestion process is facilitated by their specialized stomach, which breaks down the tough plant material.
  3. Camouflage: The algae that grow on their fur help them blend into the forest canopy, making it difficult for predators to spot them.
  4. Thermoregulation: Sloths have a low metabolic rate and can regulate their body temperature by moving to different parts of the canopy to find the optimal temperature.
  5. Reproduction: Female sloths give birth to a single offspring after a gestation period of about six months. The young sloth clings to its mother for several months before becoming independent.
1

What is the primary function of the two-toed sloth's long claws?

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Why does the fur of a two-toed sloth grow in the opposite direction compared to most mammals?

1

What role do the algae that grow on a two-toed sloth's fur play?

1

How does the two-toed sloth's digestive system aid in its survival?

1

What is a key adaptation of the two-toed sloth's skeletal structure?

1
While most land mammals have claws, animals use them for different purposes.

Koalas and two-toed sloths spend a lot time in __________. Their short, sharp, hooked claws are used for _____________.

Some animals, like the meerkat, skunk, grizzly bear, and ___________________________ use their claws for digging. Their claws are _________ and hooked to help them dig for food.

A polar bear’s claws serve two main functions. Sharp, curved claws help it grab on to the ________ and hunt their _________.

A cheetah is built for speed. Its claws do not retract, but instead are always out. This helps the cheetah _________ the ground.

Claws are used for climbing, ____________, hunting, and providing traction when
running.
Other Answer Choices:
trees
grip
climbing
ice
digging
long
three-banded armadillo
prey