Animals - Topic

Animals - Topic

382,590 subscribers



Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from 8.5 millionths of a metre to 33.6 metres and have complex interactions with each other and their environments, forming intricate food webs. The category includes humans, but in colloquial use the term animal often refers only to non-human animals. The study of non-human animals is known as zoology.
Most living animal species are in the Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria inclu...
This channel was generated automatically by YouTube's video discovery system.


00:00 My Dog Has a Puppy Play Date
255K+ views | Oct 20, 2019 at 07:00
00:00 Open topics today
2K+ views | Oct 19, 2019 at 07:00
00:00 Dalmatian Puppy React to the Ocean
13K+ views | Oct 18, 2019 at 07:00
00:00 True Facts : The Sand Bubbler Crab
428K+ views | Oct 16, 2019 at 07:00
00:00 Are You My Mother?
443K+ views | Oct 11, 2019
00:00 Cats In Therapy
411K+ views | Oct 04, 2019