Despite being the tallest animal, giraffes have the shortest sleep requirements of any mammal, sleeping an average of just 30 minutes per day. And when they do sleep, usually it’s just for a few minutes; until the 1950s, researchers believed that giraffes don’t sleep at all.
The giraffe is a prey animal, so many of its habits have evolved out of necessity. Since it’s difficult to lie down or get up quickly, sleeping is a huge liability. (Source)
bleh poor Bonnie was quite sensitive at that time and got easily startled.. and Mangle was still trying to get the hang of the walking on the ceiling business >3>