It takes 4 hours to hardboil an ostrich egg

and 9 other totally useless facts about animals.
Roosters can't crow if they can't fully extend their necks.

Dolphins can hear underwater sounds from 24km (15miles) away

The fingerprints of koala bear are indistinguishable to that of a human

Emus can't walk backwards

Porcupines float in water

Flamingos can only eat when their heads are upside down

The cheetah is the only cat that can't retract it's claws

The bones of a pigeon weigh less than its feathers

Giraffes have no vocal cords


  1. According to Wikipedia : The cheetah's paws have semi-retractable claws (known only in three other cat species: the fishing cat, the flat-headed cat and the Iriomote cat),

  2. And from the San Diego Zoo website: Although they do possess vocal chords, giraffes vocalize much less than okapi.