Sized Mammal facts
While investigating facts about Sized Mammal, I found out little known, but curios details like:
The law of urination, it states that all mammals take roughly 21 seconds to empty their bladders regardless of size
The Law of Urination: all mammals, regardless of size, take the same time to pee - about 20 seconds.
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 43 of the best facts about Sized Mammal I managed to collect.
-
An elephant-sized sloth existed and went extinct only 10.000 years ago. It was one of the largest land mammals, measuring up to 6m(20ft) and weighing 4 tons
-
The "vampire squirrel" of Borneo has the fluffiest tail of any mammal on Earth - its tail is 130% the size of its own body
-
All mammals, regardless of size, take an average of 21 seconds to void their bladder according to the Law of Urination.
-
The elephant's closest relative besides manatees and dugongs is a rabbit-sized mammal called the hyrax
-
An elephant takes the same amount of time to pee as a cat. Most mammals in fact, regardless of size take 21 seconds to urinate.
-
Mammals (including humans) have the amount of nipples they do because of the 'one-half' rule. We have two nipples because the average litter size is one. Dogs that have an average litter of 6 puppies have 12 nipples etc.
-
Despite its large size, bill has low mass because it is made of keratin (same substance that builds hair and nails of mammals). Also, bill has numerous air pockets which additionally decrease its weight.
-
Size differs between the sexes in 49 different animal classes. In 86 percent of these classes, females were the larger sex. Only in mammals and birds is far more common for males to be larger than females
-
Due to their small size, geckos are often preyed by snakes, birds, mammals and some large spider species.
-
Eyes of tarsiers have 0.63 inches in diameter. Each eye is heavier than the brain. They have the largest eyes (compared to the body size) of all mammals.
What is true about sized mammal?
You can easily fact check it by examining the linked well-known sources.
Shrews vary in size. Smallest mammal on the planet is Etruscan Shrew which reaches 1.3 inches in length and 0.07 ounces in weight. Most shrews reach between 2.5 and 9.5 inches in length and weigh of up to 3.5 ounces.
Red blood cell sizes (diameters) vary in mammals but don't correlate to the size of the animal. Humans (7.9 microns) are smaller than elephants (9.3) but squirrels (5.6) are slightly bigger than horses (5.5) - source
The heartbeat rate of mammals are inversely proportional to their size. For eg: the tiny Shrew has an avg. resting heartbeat of 1200 beats per minute! Humans clock b/w 60-100 bpm, while a blue whale is down around the 10 bpm mark. - source
Despite its large size, bushmaster has the smallest swallowing capacity (compared to other snakes) in the world. Its diet is based mostly on small mammals (such as rodents) and birds.
Early mammals in the Cenozoic Era were quite large. Beavers were as long as 7 feet. Birds were as tall as 7 feet. Sloths grew to the size of our current elephants.
Whales and dolphins evolved from a four footed land mammal that looks like a wolf-sized rat
Due to their small size, glass frogs are easy target of large predators. Main enemies of glass frogs are snakes, mammals and birds.
A paleontologist made a bet with a group of students: if they (improbably) found a mammal bone at a dig site, he'd buy them a cubic meter of chocolate. They found one, but chocolate can't be made in cubes that size. He gave them a cubic meter of cocoa butter and named the new species "cadburyi."
The first whales, Pakicetus, were land mammals about the size of large dogs.
Primates, including humans, burn half as many calories as other mammals of comparable size
The glyptodon was a large mammal that lived in Americas until it went extinct around 8000 BCE. It looked like a cross between a beaver and an armadillo and was the size of a Volkswagen Beetle.
