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.
Other poison dart frogs are far less toxic than the golden poison frog, and only a handful of species pose a risk to humans. Obtaining the poison for use on darts was a gruesome process, according to an account published in 1978.he brighter frogs were more toxic. Her team collected strawberry poison dart frogs from western Panama, and measured how toxic the frogs' skin chemicals were. She also measured their colours precisely, using an instrument called a spectrophotometer, and determined how easily predatory birds could detect them.