- published: 19 Feb 2015
- views: 30263
Animals are a major group of multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. All animals are also heterotrophs, meaning they must ingest other organisms or their products for sustenance.
Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago.
The word "animal" comes from the Latin word animalis, meaning "having breath". In everyday colloquial usage, the word often refers to non-human members of kingdom Animalia. Sometimes, only closer relatives of humans such as mammals and other vertebrates are meant in colloquial use. The biological definition of the word refers to all members of the kingdom Animalia, encompassing creatures as diverse as sponges, jellyfish, insects and humans.
Animals have several characteristics that set them apart from other living things. Animals are eukaryotic and mostly multicellular, which separates them from bacteria and most protists. They are heterotrophic, generally digesting food in an internal chamber, which separates them from plants and algae. They are also distinguished from plants, algae, and fungi by lacking rigid cell walls. All animals are motile, if only at certain life stages. In most animals, embryos pass through a blastula stage, which is a characteristic exclusive to animals.
A laughable collection
of your natural selection
a consortium of fools
another predilection
is the method of convection
theory heats and then it cools
The modern man is dying
aint got no wings no flying
you've got a lot of nerve
well you just keep denying
the world it keeps dividing
til we get what we deserve
Until all we are...animals
educated...criminals
Does my nature undermine
the purpose of design
has my shore become my sea?
If I seek then will i find
that it's just matter over mind
or is my nature calling me?
The modern man is laughing
it usually doesn't happen
but tonight anything goes
The audience is clapping
they love it when this happens
cause tonight everyone knows
that all we are...animals
educated...criminals
so quit playing russian roulette
it's automatic regret
they wont ever let you forget
where you started from
I guess all we are...animals
....educated criminals