The endoskeleton of a crab is made up of hard exoskeleton and soft tissue.

The formation of the endoskeleton in sharks is a skeletogenous process.

The endoskeleton of a turtle is fused to its shell.

The endoskeleton supports muscle attachment.

Humans have an endoskeleton too.

An endoskeleton supports the body.

An endoskeleton helps animals move.

Mammals have a strong endoskeleton.

The endoskeleton is inside the body.

The endoskeleton helps with balance.

An endoskeleton can vary in strength.

Birds have a lightweight endoskeleton.

An endoskeleton grows with the animal.

An endoskeleton can heal after injury.

Fish have an endoskeleton made of bone.

The endoskeleton protects vital organs.

Some reptiles have a bony endoskeleton.

The endoskeleton can be strong or weak.

The endoskeleton allows for flexibility.

Many animals rely on their endoskeleton.

An endoskeleton can be made of cartilage.

The endoskeleton is crucial for survival.

An endoskeleton grows as the animal ages.

An endoskeleton is essential for movement.

An endoskeleton is different from an exoskeleton.

The endoskeleton is important for locomotion.

The endoskeleton is a key feature of vertebrates.