Specifically, it is the tissues in the bone which makes up the skeleton. This bone tissue is composed of cells with extracellular matrix that is calcified. Bone contains collagen and calcium phosphate which contribute to it mineral structure and firmness.
Newts are generally a safe pet, however there are a few species that are known to carry salmonella, and other species are in fact poisonous, but only if consumed. The brightly colored bellies of a newt are one way to tip a person off to their toxicity.ewts are generally a safe pet, however there are a few species that are known to carry salmonella, and other species are in fact poisonous, but only if consumed. The brightly colored bellies of a newt are one way to tip a person off to their toxicity.
Poison dart frogs are sometimes called poison arrow frogs or dart poison frogs or poison frogs. All of these names refer to the fact that these frogs secrete poisons.The poison from poison dart frogs is used by Central and South American Indians on the darts they use for killing animals.he poison from the poison dart frogs contain toxins that dull the nerves and can produce heart and respiratory failure. The poison that some species secrete is the most powerful animal poison known. As little as 2 micrograms of the poison can kill an adult human. Each frog contains nearly 200 micrograms.