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Check for rigor mortis.
Possums do not play dead. Opossums do. A dead possum will just lie there, and death is obvious. As for an opossum - all its physiological functions slow down to an almost-stopped point, but it should still be slightly warm to the touch.
A cat that has died will not be breathing, moving or responding to you, and depending how long the cat has been dead might be a little stiff from rigor mortis from setting in.
It is called "rigor mortise" and it is Latin for "of death".
The Dead ferret!
His ferret is dead. no one knows how it died it just died. but i feel sorry for the ferret and all but I'm all for Obama'08
It is for a dead person, or a "coroners case" in legal terms. For policing a person is not considered to be dead unless they have been decapitated, or have rigor mortis or have begun decomposing so a body found in any of these situations would be a 10-55.
Rigor mortis is dead stiff body, not really called posturing.
'Mortis' is from Latin , and means 'dead'. E.g. Rigor mortis. The stiffness a cadaver (dead person) acquires a few hours after dying.
Rigor mortis is a natural and normal process that occurs in the carcass of all dead animals with developed muscular systems. It is caused by the continued activation of myofibers that eventually become "stuck" in the contracted phase. When all the myofibers are contracted and remain that way, the overall carcass becomes stiff and is said to be in rigor mortis. After a while, the myofibers start to break down under bacterial digestion and the rigor mortis will eventually collapse. There is no way to avoid rigor mortis to the best of my knowledge.
Rigor mortis occurs because the muscles in the corpse contract. This contraction occurs because the calcium ions that are stored in the muscles diffuses and causes the myosin and actin proteins to activate, but not release.
There are many factors that can be considered in making the determination. * Temperature of the body * Rigor Mortis * Existence of certain insects in the body * Decomposition of tissue and fluids * Last known contact with others * Environmental factors