BIOL 1902 Study Guide - Botulism, Ovipositor, Flesh Fly
Document Summary
Natural history - week eight - lecture a. Mammals such as the short-tailed shrew has a poisionous bite filled with hemotoxins. Some animals employ selective feeding, which is a process where the animal digests most of its prey; smaller animals will suck the juices from the indigestible parts while bigger animals will leave the bones behind. The fisher (weasel) will skin its prey (porcupines) in a process called skinning. Some animals will pass indigestible parts (hair and bone fragments) through their body. The hair is digested to protect the intestines and stomach when swallowing the bones. Owls will swallow their prey (shrews, voles, etc. ) whole, then pass it through to the gizzard which separates the digestible parts (liquifies) from the indigestible parts (hair and bones are made into a ball and regurgitated into a pellet). For example, deer can injure predators using their hooves (stepped on, cracked skulls) during the chase or capture.
