Dogs’ feet give scientist paws for thought – answers

questions

1. What is not a problem for dogs? going barefoot in the snow
2. How has this ability been exploited for hundreds of years? by dog mushers (people who use dog to pull sleds) in Alaska
3. What can scientists now do? explain how a dog protects its paws in the snow
4. Where do dogs exchange heat? at the end of their legs
5. What kind of system do they have in their feet? a heat exchange system
6. How was the professor able to see this system in the dog’s paw pads? using an electron microscope
7. How is the warm blood carried from the heart? through arteries
8. What is carried in the opposite direction? oxygen-depleted blood
9. Which other animals also have this system? seals and dolphins
10. What has caused some dogs to lose the ability to resist extreme temperatures? generations of breeding
11. Can you find two puns in this piece? paws (pause) for thought and no great feet (feat)