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6)homeostasis- a tendency toward a relatively equilibrium between interdependent
7)burrow- a hole or tunnel dug by a small animal
8)genetic affinity- relationship by direct descent
9)mammal- a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young
10)platypus- a semiaquatic egg-laying mammal that frequents lakes and streams in eastern Australia. It has a sensitive pliable bill shaped like that of a duck, webbed feet with venomous spurs, and dense fur

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1) duckbill- an animal with jaws resembling a duck's bill
2) semiaquatic- an animal that lives partly on land and partly in water
3) webbed feet- fingers or toes connected by a web or membrane
4)receptor- a cell or organ able to respond to light
5)insulating- protect something by interposing material that prevents the loss of heat

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1) the first scientists to study a platypus thought they were victims of a hoax
2) platypuses don't have teeth, they use rocks to grind their food
3) platypuses are also called ornithorhynchus anatinus
4) platypuses can hold their breath up to 2 minutes underwater
5) the platypus is only found in Eastern Australia in small river and streams

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the duck billed mammal has a genetic affinity with both reptiles and birds according to a new study.

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the platypuses endocrine system and nervous system are able to maintain homeostasis within the body, communicating with all the systems and letting them know when a certain internal condition must be changed. they are able to alert the circulatory system to keep the platypuses body temperature constant. it can reduce blood flow in areas with no fur. its fur is waterproof and traps an insulating layer of air next to its skin.the platypus heart rate can even drop down from 140-230 beats per minute to almost 0 beats per minute in order to survive in colder waters.

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includes webbed feet and a broad, flat tail that helps it swim, thick fur to keep it warm and strong claws to help it dig and move around on land. the platypus also have a special receptors in its bill to help it hunt in the dark.

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platypuses are carnivores, they hunt for their food in the water. when they find food they scoop it up with their bills, they store it in their cheeks and swim to the surface.

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after a platypus egg hatches the baby (called a puggle) drinks its mother's milk. platypus infants are the size of lima beans. females nurse their young for 3 to 4 months until their babies can swim on their own.

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the creature consider to be the strangest mammal in the world, has been the latest to have it genetic code sequenced, revealing it to be a bizarre mix of mammal, bird and reptile, with very complex sexuality. platypus have 10 X and Y chromosomes, with 5 of each kind.

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platypuses reproduce in a unique way, thy are one of two mammals that lay eggs. a mother typically lays 1 or 2 eggs. Females seal themselves inside one of the burrows champers to lay their eggs, the eggs hatch in about 10 days.

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like any living thing the platypus has many cells. these cells help them function each day to help them survive. they have rods and cones cells in their eyes. these cells are composed of single cells and double cells. what makes these cells unique is is the ectopic nuceli on the rods and cones.these nuceli are placed on the top of the cells, not in the center so the 'brain' of the cell is at the top, and has to go through the whole cell to command something at the other end of the cell