Largest birds in the world – Ostrich
The ostrich holds many records including being the world's largest living bird and the fastest thing on two legs.
Read MoreCheetah vs. Allcomers
Usain Bolt might be the fastest man - but the cheetah would show him two clean pair of heels.
Read MoreFastest animal on land: the cheetah
Meet the king of speed. The cheetah is an out and out sprinter, built for speed with a flexible body and large stride. It can accelerate from 0-40mph in...
Read MoreFastest animals on land
Get the lowdown on the fastest animals on six legs, four legs, two legs and no legs.
Read MoreFastest animals in the air
Get the lowdown on the birds that leave the average pigeon in their slipstream.
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