Hoofed or Hooved Animals

I have to share the most interesting thing I learned last night at my class. We were doing an activity about previews and our sample reading was about Hoofed Animals. I have to share what I learned because it is most intriguing and is going to be a jeopardy questions one day.
Hoofed animals:
-examples are horses, camels, rhinos, unicorns, reindeer, hippos, pigs, cows, goats, sheep, elephant, wildebeests, water buffalo, zebra, and giraffes.
-Two main groups: Odd-toed and even-toed
-Most are plant eaters and have cheek teeth to help chew the veggie material also have a stomach that has several chambers for digesting.
-Some have cud chewers, which means they chew some food and it goes to the stomach and then it returns to the mouth to be chewed more thoroughly.
-Most travel in family groups. Elephants travel in groups of about 40 and are all related. When a mother elephant is giving birth, the other lady elephants will encircle her.
-Pregnancy lasts a few months and non-domesticated animals are in heat only once a year.
-Seacows are considered hoofed animals because they have front legs with flattened horny nails (hoofs are nails).
So instead of getting a pedicure, they get hooficures.