Whale is the common name for a widely distributed and diverse group of fully aquatic placental marine mammals. They are an informal grouping within the infraorder Cetacea, usually excluding dolphins and porpoises. Whales, dolphins and porpoises belong to the order Cetartiodactyla with even-toed ungulates and their closest living relatives are the hippopotamuses, having diverged about 40 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have split apart around 34 million years ago. The whales comprise eight extant families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale),
The cockroach, also known as the roach, is found worldwide in every environment and every habitat with the exception of water. The cockroach is one of the most commonly known pests to humans of the insects world but plays a vital role in the ecosystem ingesting decomposing materials.
There are thought to be around 4,000 known species of cockroach in existence but only about 30 of the different species of cockroach are the ones that humans come into contact with. Cockroaches are generally not keen on close contact with humans and are only really present if there is enough for them to eat.
The cockroach is dated around 300 million years old, with fossil evidence suggesting that the
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The gila monster is a large species of lizard that is natively found in parts of the southern United States and northern Mexico. The gila monster is also one of only two species of venomous lizard found in North America.
The gila monster is found roaming through a range of habitats throughout the drier regions of central America. Gila monsters tend to inhabit areas that are more sheltered such as shrublands, woodlands, forests and semi-deserts.
In the same way that a camel's hump, the tail of the gila monster acts as a fat storage facility in order to help the gila monster to survive more successfully in such arid conditions. When the gila monster eats and therefore replenishes i
