BIOL 1902 Lecture Notes - Lecture 15: Flesh Fly, Shrew, Ovipositor
22 Feb 2017
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Document Summary
Massasagua rattlesnake has digestive enzymes: they inject these into their prey to predigest them before eating them. Short-tailed shrew are one of very few poisonous mammals: they have a sort of hemotoxic to break down red blood cells. Once a prey is captured and killed, there are certain indigestible parts. Selective feeding: they only actually ingest the parts they can eat. (i. e. eating around bones, etc. ) Fishers skin porcupines, eating everything but the hide and the quills: bears also do this. Some animals do pass indigestible bits through their bodies (small bone fragments, hair, etc. ) Owls swallow their prey whole: their gizzard separates the bones, flesh, and hair from the meat. The meat is liquefied and is passed down to the intestines, while the other parts are regurgitated about 12 hours later as a pellet (hair ball with bones, etc. Prey can fight back: some wolves can be found dead with broken skulls from deer and moose kicking back.
