Fascinating: It used to be thought that giraffes did not sleep at all, but this was shown to be incorrect in a 1956 study which demonstrated that adult giraffes slept recumbently on the ground for short periods (2.5-6 minutes), resting the head on the hindquarters or ground and holding the neck in an arced posture.
The sleep behavior of giraffes was also looked at in detail in a 1996 study which showed that giraffes slept both while standing and while recumbent for a total of 4.6 hours per 24 hours.
If you're interested in the sleeping behavior of other creatures, read "Sleep behaviour and sleep postures" at Tetrapod Zoology.
Friday, October 10, 2008
Do giraffes sleep?
Fascinating: It used to be thought that giraffes did not sleep at all, but this was shown to be incorrect in a 1956 study which demonstrated that adult giraffes slept recumbently on the ground for short periods (2.5-6 minutes), resting the head on the hindquarters or ground and holding the neck in an arced posture.
The sleep behavior of giraffes was also looked at in detail in a 1996 study which showed that giraffes slept both while standing and while recumbent for a total of 4.6 hours per 24 hours.
If you're interested in the sleeping behavior of other creatures, read "Sleep behaviour and sleep postures" at Tetrapod Zoology.
this is amazing! i never knew how giraffes slept and now i do and i got to see a picture!!
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