Harrison Levin

Sea Lamprey  Scientific Name:  Petromyzon marinus  Environment:  found only in the Mediterranean and North Atlantic, in the coastal seas off the North East USA, Nova Scotia, southern Greenland, the UK, Ireland and Scandinavia. It is also found in the Great Lakes and enters inland freshwater rivers and streams to breed. In its natural habitat, the sea lamprey lives in the open ocean, migrating into freshwater to spawn.

Characteristics  Attack:  Attacks a wide range of salt- and freshwater fish, including herring, mackerel, salmon, trout and even some sharks, using its 'sucker' to attach to its host and rasp out a whole with its rough tongue.  Physical:  Sea lampreys grow up to 1.2 m in length, weighing up to 2.5 kg.  Are easily identified by the wide oral disc ('sucker') in place of their mouth, which is filled with many small teeth arranged in circular rows

Great White Shark  Scientific Name:  Carcharodon carcharias  Environment:  Found in all cold temperate and tropical waters, from 60°N latitude to 60°S latitude

Characteristics  Interesting Facts:  Olfactory bulbs: cells in the nose where information is analyzed.  Do not need to drink  Reach lengths of over 6.1 m long and weigh up to 2,268 kg  Attack:  Swim over the ocean ground looking for prey such as seals and shoot up stunning and taking a bite out of the victim

Rainbow Trout  Scientific Name:  Oncorhynchus mykiss  Environment:  Native to tributaries of the Pacific Ocean in Asia and North America as well as much of the central, western, eastern, and especially the northern portions of the United States

Characteristics  Importance:  Fisheries: highly commercial; aquaculture: commercial  Physical:  Swim bladder: remain buoyant  Can breath without swimming  Feeding:  Close to bottom

Panamanian Golden Frog  Scientific Name:  Atelopus zeteki  Environment:  In wet forest stream habitats, the frogs are dispersed in and along streams

Characteristics  Physical:  Gills and/or lungs in order to breath  Skin is soft  Adult males measure and weigh 8-12 g, while adult females measure mm and weigh g  Defense:  Capable of secreting poison to help protect themselves from predators

Western Diamondback Rattlesnake  Scientific Name:  Crotalus atrox  Environment:  Unhabit dry, rocky, shrub-covered terrain where they can conceal themselves inside crevices in the rocks or in mouse holes.

Characteristics  Physical:  Pit Organ: The membrane senses very slight temperature differences between the snake's inner and ambient temperatures  Each link of the rattle is the remnant of a molted skin; as the snake molts, the last scale loosens but does not fall off. As the snake ages, new rattles are formed with each molt, while old rattles simultaneously fall off.  Behavior:  are aggressive and easily excitable. This species causes more fatalities than any other snake in the United States. They are not necessarily apt to attack offensively, but are rather highly defensive

Toucan  Scientific Name:  Ramphastos sulfuratus  Environment:  Toucans live in the rainforests of Central and South America

Characteristics  Three Adaptations:  The first one is that they have bills in order to eat food. The second one is the feathers it has to protect their body. The last one is that it's wings help them fly away from predators.  Facts:  Scientists haven't figured out why the bills of the toucan are so big  Toucans are frugivors (animals that eat fruits)  They sleep in holes that are in trees

Fox Squirrel  Scientific Name:  Sciurus niger  Environment:  Fox squirrels are found in a diverse array of deciduous and mixed forest. Areas with a good variety of tree species are preferred due to variability in mast production. (eastern and central United States, south into northern Mexico, and north into Canada)

Characteristics  Physical:  Have excellent vision, even in dim light. They have well-developed senses of hearing and smell  Eating:  Gall insects, moths, beetles, bird, eggs, and dead fish. Acorn, hickory, walnut, mulberry, and hawthorne seeds are preferred  Interesting Fact:  play a significant role in shaping the of forests. They may eat almost all of the tree seeds that trees produce in some years. When squirrels bury seeds and forget them, these seeds are likely to sprout where they were placed

 Petromyzon marinus, Sea Lamprey - MarineBio.org. Retrieved Thursday, March 19, 2009, from  Carcharodon carcharias, Great White Shark - MarineBio.org. Retrieved Thursday, March 19, 2009, from  "Oncorhynchus mykiss." 15, Jan Mar  Information on amphibian biology and conservation. [web application] Berkeley, California: AmphibiaWeb. Available: (Accessed: Mar 19, 2009).  Ingmarsson, L "Crotalus atrox" (On-line), Animal Diversity Web. Accessed March 20, 2009 at ox.html.  "Species from the Peruvian Jungle." Toucan. n/a. 19 Mar  Fahey, B "Sciurus niger" (On-line), Animal Diversity Web. Accessed March 20, 2009 at er.html.