5 bizarre inflatable animals

1. Greater sage grouse

This North American bird inflates its chest and preforms a bizarre dance to attract females.

 

Sage grouse

 

2. Siamang gibbons

The largest species of gibbon can inflate its throat to amplify its booming calls.

 

Siamang

 

3. Magnificent frigatebird

Male frigatebirds inflate their throat sac ready for inspection by nearby females.

 

frigatebird inflate puff

 

4. Puffer fish

These fish fill their spined bodies with water to stop predators from getting a good enough grip.

 

Puffer fish

 

5. Hooded seal

Males inflate a dangling sac as part of an aggressive display to scare away other seals.

 

Hooded seal

 

 

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Kangaroo anatomy

 

Image from flickr.com/photos/floridabirds