the best science on the web about
horses, rhinos & zebras

Odd-Toed Ungulates
Image: iStockphoto.com/St.MarieLtd.

Odd-Toed Ungulates

What do the pig-like tapir and the horn-snouted rhino have in common with their fast and graceful cousins, the horse and zebra? For the answer look to their feet.

All these mammals have either one or three toes on their hooves — leading to their name, the odd-toed ungulates. Only 17 species of these plant-eaters are left on Earth today. Take a closer look.

BBC
Loading...
Interactive Drawings and Dissections for Veterinary Anatomy

Interactive Drawings and Dissections for Veterinary Anatomy

Ready to take a closer look at the anatomy of dogs, cats, horses, or cows? Virtually view or dissect these animals with a click of your mouse. More...

Interactive
Donald R. Adams
How Do a Zebra’s Stripes Act as Camouflage?

How Do a Zebra’s Stripes Act as Camouflage?

When the predator that hunts you is color blind, black-and-white stripes can help you hide. See how this camouflage helps zebras fend off attacks from lions. More...

Article
HowStuffWorks
Przewalski’s Horses

Przewalski’s Horses

Travel to the steppe of Mongolia to meet the last remaining breed of wild horse. Przewalski’s horses are smaller than most of their domesticated relatives. More...

Article
National Geographic
Rare Horses Released in Spain as Part of ‘Rewilding’ Effort

Rare Horses Released in Spain as Part of ‘Rewilding’ Effort

In western Spain, horses closely related to those that roamed the land 2,000 years ago have been released into the wild. These Retuerta horses are nearly extinct. More...

Article
NPR
Photo Gallery: Feral Horses

Photo Gallery: Feral Horses

Wild (or "feral") horses roam throughout Theodore Roosevelt National Park in North Dakota. Find out more about how they live with this collection of photos you can download. More...

Images
National Park Service
Tapirs

Tapirs

Somewhere between a pig and a small elephant, the tapir is actually related to horses and rhinos. Little changed over millions of years, these living fossils are an endangered bunch. More...

Article
National Geographic
What Color Is a Zebra?

What Color Is a Zebra?

Ever wondered, "Are zebras black with white stripes or white with black stripes?" Get the scientific answer. Then discover the role genetics and pigmentation play in a zebra's coloration. More...

Article
HowStuffWorks
Amazing Feets: Living Relatives of the Horse

Amazing Feets: Living Relatives of the Horse

Investigate mammals with hooves ("ungulates") and the two groups they're divided into. Then find out why tapirs, rhinos, and horses have to "stay on their toes." More...

Interactive
Florida Museum of Natural History
Horsing Around

Horsing Around

What do a horse's proportions have to do with how the horse gallops? Find out as the SciGirls search for a horse with the smoothest trot. More...

Video
SciGirls/PBS
In Photos: Why Zebras Have Black and White Stripes

In Photos: Why Zebras Have Black and White Stripes

There are a number of theories — including controlling body heat and protection from predators — but the question of why has "long befuddled scientists." Explore the latest thinking. More...

Article
LiveScience
Perissodactyla: Pictures

Perissodactyla: Pictures

From mountain zebras and wild horses to Brazilian tapirs and Asian rhinos, examine the order of odd-toed ungulates with this extensive gallery, More...

Images
Animal Diversity Web
Rhino Horn Lab

Rhino Horn Lab

Worth three times their weight in gold on the black market, rhino horns are highly lucrative — and illegal. See how scientists are using chemistry to try to stop poachers. More...

Video
NATURE/PBS
Rhinoceros Videos

Rhinoceros Videos

They may have poor eyesight, but rhinos have heightened smell and hearing. This combination makes them charge unpredictably. More...

Video
Animal Planet
Sumatran Rhino

Sumatran Rhino

These rhinos are among the most endangered animals on the planet. In 2001 at the Cincinnati zoo, Andalas became the first Sumatran rhino born in captivity in more than 100 years! More...

Interactive
Cincinnati Zoo & Botanical Garden
The Evolution of Horses

The Evolution of Horses

The earliest-known horses roamed Earth 55 million years ago. Today's horses are just "one tiny twig" on that family tree. Track how they've changed since their dog-sized start in the forests of North America. More...

Article
AMNH

Latest Comments

You Also Might Like

  1. sheep

    sheep

  2. pikas

    pikas

  3. depression

    depression

  4. mimicry

    mimicry

  5. hearing

    hearing