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