By: Alex and Brooke

*Dogfish Shark aka Bruce

*Classification

*Kingdom: Animalia*Phylum: Chordata*Class: Phondrichthyes*Order: ________________*Family: Squalidae*Genus: Squalus*Species: _______________

*Integumentary System

*Gray in color*Made up of dermal ____________ *Shaped like curved, grooved teeth *______________ texture

*Dorsal side is darker*Very thick skin

*Skeletal/Muscular System

*Skeletal System*Made up of ____________* Light weight and flexible

*Muscular System*Red muscle* ____________ * Function for cruising

*White muscle* Anaerobic *Used for sudden burst in ___________

*Nervous System

*Brain is the center *Forebrain*____________*Hindbrain

*Sense of smell very good*Well developed eyes*________ line system for sense of touch*Sense of smell not highly adapted *Play no role in locating __________

*Respiratory System

*Mouth ________________ gill slits*Blood in gill filaments absorbed oxygen

from incoming water*Rely on _________

*Circulatory System

*_______ chambered heart*Heart gills body tissues *Low blood pressure*Muscular contractions needed to ____________

blood

*Digestive System

*Short and wide __________*Lower portion of digestive tract is the

spiral valve*Increases ___________ absorbed

*Digestive tract leads to rectum

*Reproductive System

*Aplacental Viviparity- live young *Part of the _____ that take care of offspring

inside mother’s body*Protected by mother’s body before birth *Gestation period is _____ months*Born in ________ months*Most litters between 12-16 *Sexually mature at 11 years

*Interesting Facts

*Average length is 2.5-3 feet*Distinguished by rows of small

_____________ along sides*Live to be 25-30 years old *Delicacy in __________ *Opportunistic feeder*Live in bathes and inshore waters