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.
Considerable overlap in toxins exists between venomous snake species and venomous lizard species. While the system of delivery differs -- snakes inject venom through sophisticated fangs while lizards have more primitive glands that mix venom with saliva -- the common toxins suggest a shared lineage.hough poison and venom are often used interchangeably, and though both rely on the transmission of toxins from one organism to another, poison and venom are different concepts. Poisonous animals, like poison dart frogs, have a toxin that is present on or in their bodies.