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Animal Fact File: Hedgehogs

What animal looks like a tiny walking pincushion, sleeps through much of the day, and can roam more than a mile in a single night? Meet the common hedgehog!

From its prickly defenses to its nighttime adventures, the common hedgehog has plenty of tricks for making its way through the wild. Find out what life is like for a hedgehog after dark, what it eats, where it makes its home, and how it prepares for the cold months ahead. You'll also get a closer look at hoglets, hibernation, and the challenges these small mammals face as their habitats change.

Teachers and parents, you can use this fact file to:

  • Introduce an animal, wildlife, or life science unit
  • Support nonfiction reading and vocabulary practice
  • Explore animal adaptations, behaviors, and habitats
  • Compare animals and the ecosystems they live in
  • Practice finding and organizing information from nonfiction texts
  • Prepare students for animal research projects or presentations (use our animal report templates!)
  • Connect science learning to conservation and environmental issues
  • Pair with videos, articles, or other informational texts (see Related Resources below)
News Clip
Heat Waves Put Hedgehogs at Risk

Picture a hedgehog on a hot summer day, and you might imagine it lounging on the beach in tiny sunglasses with a glass of lemonade. In reality, heat can make life tough for hedgehogs.

Hedgehogs are small, spiky mammals that live in the wild in parts of Asia, Africa, and Europe, including the United Kingdom. They aren't found in the wild in North America. Hot, dry weather can cause them serious problems, like dehydration, parasites and trouble finding food. That's hard enough for any animal, but it's even harder for hedgehogs that are pregnant or raising their babies, called hoglets.

That's why one hedgehog rescue center was packed this summer, caring for more than 80 animals at once. It was the busiest June the center had ever seen.

In places where wild hedgehogs live, people can help without working at a rescue. They can leave out fresh water and dry kitten food. They should avoid milk, bread, grains, fruit and vegetables, which can make hedgehogs sick. As the saying goes, not all heroes wear capes. To a hedgehog, some of them leave out kitten food!

News Clip
This AI Program Is Basically Google Earth for Hedgehog Habitats

The UK wants to see more hedgehogs, and it’s not because hedgehogs are incredibly cute. Well, not just because of that. The UK’s hedgehog population is in dangerous decline, but part of the solution could be an AI tool called Tessera that uses satellite images to help build a map of hedgehog habitats.  

Before Tessera can work its magic, it needs some input. Researchers need to find and learn hedgehogs’ preferred environments by identifying the habitat’s fingerprint. A fingerprint, in this case, is a pattern or collection of characteristics generally found in hedgehog habitats. Maybe your habitat fingerprint would include a freezer full of ice cream and trampoline floors! It has nothing to do with actual fingers, even though that would be a great excuse to spend all day looking at hedgehog paws. 

Researchers do their field work in small areas, then input their findings into the software that can extrapolate, show where the other similar habitats are, and record changes over time. The project will hopefully help us learn about where hedgehogs live, how we can help them survive, and how we can set up our homes to comfortably accommodate a hedgehog houseguest.