These baby hedgehogs have been rescued from a building site, but are now too small to survive winter in the wild.
They were brought to Shepreth Wildlife Park, in Hertfordshire, where staff were shocked at how tiny they were!
Hogs this size are usually seen in the summer, giving them enough time to grow bigger before the cold weather sets in.
The hedgehogs are putting on weight now, but will have to hang around until the spring before they're strong enough to return to the wild.
At three-weeks-old the youngsters are just starting to open their eyes. They're being fed on a special milk formula every four hours.