Can owls see in the dark?

Photo by Ian Britton at FreeFoto.com.

Yes, and so can people!  However, owls have large, sensitive eyes that can see little pieces of light 100 times better than people.  Outside, at night, it may seem completely dark to you, but an owl will see the tiniest bit of light and find things you cannot find.  Their great hearing also helps them find food in the dark. 

Did you know that owls may not see color?  What would the world look like if everything you saw was black, white, or gray?

Do earthworms have a head?

Photo by Michael Linnenbach on Wikimedia.com.

Yes!  Earthworms usually move head-first, but can also "crawl" backwards.  Inside the head is a small brain, a mouth, "light cells" that can tell the difference in light and dark, and a "nerve cord" that can tell if the worm is touched.  The head is on the end of the worm closest to the clitellum (the big patch near one end of the worm).  In this picture, the head is at the top. Also, the tail is often flatter and the head is usually a little more round.

Do earthworms dig?

Photo by Fir0002/Flagstaffotos at Wikimedia.

 Yes, though it is more like pushing their way through the dirt!  Earthworms have very little, tiny, hairs called setae all over their body.  They also have strong muscles that are shaped like circles and other strong muscles that go along their body.  When an earthworm is ready to dig, it sticks its setae (on its tail) out into the dirt.  The setae hold onto the dirt while the worm uses its muscles to stretch out as long as it can (and dig or push through the dirt!).  After it's stretched out, it sticks the setae on its head into the dirt to hold onto the dirt while it pulls its tail up close to the head.  Then it starts all over again!

If you're very quiet you might be able to hear the setae if you can convince a worm to crawl on a piece of paper.  If you have a magnifying glass, you might be able to see the setae, too.

Do penguins live on the water?

Photo by Kristin De More at FreeFoto.com.

Sometimes.  All penguins travel to land (some on icebergs and others on nice warm islands) to have babies.  There are many different kinds of penguins.  Some penguins always sleep on land and others spend most of the year (up to 3/4 of their life) on the water.  Penguins swim, fish, play, and sleep on the water.  They can fall asleep while they are floating on their backs.  While they are in the water they need to watch out for leopard seals, sharks, and orcas (or killer whales) because those animals like to eat penguins.