Bats are the only mammals that can fly. source
Bats are the only mammals that can fly.
Bats are placental mammals. Bats were formerly thought to have been most closely related to the flying lemurs, treeshrews, and primates. source
Bats are placental mammals. Bats were formerly thought to have been most closely related to the flying lemurs, treeshrews, and primates.
Mammals range in size from the 30–40 mm (1.2–1.6 in) bumblebee bat to the 30-meter (98 ft) blue whale. source
Mammals range in size from the 30–40 mm (1.2–1.6 in) bumblebee bat to the 30-meter (98 ft) blue whale.
All female mammals nurse their young with milk, secreted from the mammary glands. source
All female mammals nurse their young with milk, secreted from the mammary glands.
The population of wild tigers at approximately 3,890 individuals. down from around 100,000 at the start of the 20th century.
On average, tigers are 4.8 to 9.5 feet (1.5 to 2.9 m) long and weigh 165 to 716 lbs. (75 to 325 kilograms). source
On average, tigers are 4.8 to 9.5 feet (1.5 to 2.9 m) long and weigh 165 to 716 lbs. (75 to 325 kilograms).
There are 10 recognised tiger subspecies. One, the Trinil, became extinct in prehistoric times. The remaining subspecies all survived at least into the mid-20th century. source
There are 10 recognised tiger subspecies. One, the Trinil, became extinct in prehistoric times. The remaining subspecies all survived at least into the mid-20th century.
Scientists who study animal life are called zoologosts. They have recorded 20,000 species of fish, 6,000 species of reptiles, 9,000 birds, 1,000 amphibians, and 15,000 species of mammals. source
Scientists who study animal life are called zoologosts. They have recorded 20,000 species of fish, 6,000 species of reptiles, 9,000 birds, 1,000 amphibians, and 15,000 species of mammals.
Birds have a very efficient system for diffusing oxygen into the blood; birds have a ten times greater surface area to gas exchange volume than mammals. source
Birds have a very efficient system for diffusing oxygen into the blood; birds have a ten times greater surface area to gas exchange volume than mammals.
The Amazon is home to about 2.5 million insect species, tens of thousands of plants, and some 2,000 birds and mammals. source
The Amazon is home to about 2.5 million insect species, tens of thousands of plants, and some 2,000 birds and mammals.
Females lion will give birth after a gestation period of 100-110 days. source
Females lion will give birth after a gestation period of 100-110 days.
Females tigers will give birth after a gestation of 104 days.
Elephants are the only mammals that can't jump.
Male African elephants are the largest extant terrestrial animals and can reach a height of 4 m (13 ft) and weigh 7,000 kg (15,000 lb).
The heart of an elephant weighs 12–21 kg (26–46 lb). It has a double-pointed apex, an unusual trait among mammals.
The koala has one of the smallest brains in proportion to body weight of any mammal, weighing only 19.2 g (0.68 oz).
The koala has one of the lowest milk energy production rates in relation to body size of any mammal.
The giraffe is the tallest living terrestrial animals and the largest ruminants.
The heaviest living animals are all cetaceans, and thus also the largest living mammals.
Adults hippos average 1,500 kg (3,300 lb) and 1,300 kg (2,900 lb) for males and females respectively.
Hippos is the largest species of land mammal after the three species of elephants and the white and Indian rhinoceros.
There are 120 mammal species in Algeria.
There are 81 mammal species in Austria and 416 species of birds.
The Aardvark (Orycteropus afer) (‘Digging foot’), sometimes called ‘antbear’ is a medium-sized mammal native to Africa. source
The Aardvark (Orycteropus afer) (‘Digging foot’), sometimes called ‘antbear’ is a medium-sized mammal native to Africa.
American buffalo (bison) is a large hoofed mammal (or ungulate) that inhabits the plains of the United States and Canada. source
American buffalo (bison) is a large hoofed mammal (or ungulate) that inhabits the plains of the United States and Canada.
Anteater is a common name for the four extant mammal species of the suborder Vermilingua (meaning "worm tongue") commonly known for eating ants and termites. source
Anteater is a common name for the four extant mammal species of the suborder Vermilingua (meaning "worm tongue") commonly known for eating ants and termites.
Anteaters have low body temperature compared to other placental mammals, just 32.7 degrees of Celsius. source
Anteaters have low body temperature compared to other placental mammals, just 32.7 degrees of Celsius.
Apes live longer than most mammals. source
Apes live longer than most mammals.
Badgers are nocturnal mammals. source
Badgers are nocturnal mammals.
The camel is the only mammal to have oval red blood cells. source
The camel is the only mammal to have oval red blood cells.
