Check out these animals as they grab a shut eye. Not all of them need a bed!
“O bed! O bed! delicious bed! That heaven upon earth to the weary head.”
Thomas Hood rhymed in his cautionary tale of Miss Kilmansegg and Her Precious Leg. While she wanted a precious golden leg, we all want our precious golden slumbers. One can live without love, but sleep? Nah… What is life without those forty winks, the short naps, the afternoon siestas, the long deep night sleep and, well, those open dripping-mouthed snoozes. Ah…such comfort. In the first part of this article, we spoke about the REM (rapid eye movement or deep-wave sleep) and non-REM sleep; how humans need to have both while some animals don’t.
You would have seen mammals and birds sleep. Insects, fishes and reptiles too need their brains to rest in some or the other form. The little kankhajura would even risk falling prey to a hungry vagabond crow while he dreams of the multi-legged beauty who preferred to hang out with the Centi-the-senti-pede instead.
A few more snoozing secrets
Horses get most of their sleep while standing. They have a mechanism called “stay apparatus” where their ligaments and tendons allow them to remain upright with ease, even while sleeping. They do occasionally lie down to get REM sleep, but only for short periods. As they are standing, they can just bolt away if a predator attacks, even if they are asleep. No wonder, our wars have been fought and won on horses.
Don’t bat an eyelid
Standing up and sleeping is fine, but can you beat sleeping upside down? Bats are masters at that. Unlike birds, they can’t take off in flight. They have to fall in it. This is because their wings are not strong enough to alight in flight and their hind legs not sturdy enough to bear their weight in an upright position. The special tendons on their feet let them hand effortlessly while they sleep. They are so effective that even a dead bat can continue to hang!
A study on fire ants showed that they take up to 250 naps a day! Each lasting around a minute. But those are the workers. The queen, of course, takes lazy long naps. The research suggested that queens dream while sleeping and move their antennas while they dream. RAM instead of REM, get it? Rapid Antenna Movement instead of Rapid Eye Movement. They live almost 10 times longer than the worker ants do. And they ask me why I’d like to be a queen!
The animal world is full of sleeping wonders: Our hairy cousins — the great apes like orangutans, chimpanzees and bonobos — make mattresses to sleep on. Sea otters occasionally wrap themselves up in seaweed, float on their backs and at times hold each other’s paws so that they don’t drift away while sleeping.
While elephants can do with three hour sleep a day, an edible dormice can sleep for nearly a year! You may like to hibernate like dormice but I am more like a giraffe who sleeps for five minutes at a time, on an average 30 minutes a day. As the quote collector, Terri Guillements says, “I’ve had such bad insomnia the sleep cops have issued a warrant for my rest.”
The writer is an author of fiction and non-fiction books and Ex-Hon. Wildlife Warden, Udaipur