Did you know that skyscrapers are often more than 100 stories tall? These large buildings sway in the wind. Discover these and other interesting facts in Skyscrapers.

Did you know that one kind of animal can have different colors? Black bears can have black, gray, or brown fur. Discover these and other interesting facts in All About Animals - Animal Colors. All About Animals - Animal Colors is part of the new EYEDISCOVER collection of AV2 books.

Did you know that parasites live on or inside their source of food? Many parasites can be dangerous to their host. Discover these and other interesting facts in Parasites.

Did you know that almost all monkeys live in groups? A group of monkeys is called a troop. Discover these and other interesting facts in All About Animals - Animal Groups. All About Animals - Animal Groups is part of the new EYEDISCOVER collection of AV2 books.

Did you know that some whales talk by singing? Different groups have different songs. Discover these and other interesting facts in All About Animals - Animal Sounds. All About Animals - Animal Sounds is part of the new EYEDISCOVER collection of AV2 books.

Did you know that mammals are warm-blooded animals? African elephants are the largest land mammals. Discover these and other interesting facts in Mammals. Mammals is part of the new EYEDISCOVER collection of AV2 books.

Did you know that a year has four seasons? Winter comes after fall and before spring. Discover these and other interesting facts in Winter.

Did you know that elephants are the largest land animals on Earth? They are known for their long noses, or trunks. Discover these and other interesting facts in Elephant.

Did you know that a year has four seasons? Fall comes after summer and before winter. Discover these and other interesting facts in Fall.

Did you know that Arabian horses are known as some of the most beautiful horses? They are small, with long manes and tails. Find out more about these amazing animals in Arabians, part of the I Love Horses series