Main content
The defensive spines of a porcupine
Porcupine spines are enough to deter the most dangerous of predators.
Duration:
This clip is from
More clips from Defence
-
![]()
Tigers have secret camouflage
Duration: 02:51
-
![]()
One of the most toxic skins on the planet
Duration: 03:17
More clips from Secrets of Skin
-
![]()
Heat-seaking predator—Series 1, Sensing
Duration: 02:57
-
![]()
The fish that can detect electricity—Series 1, Sensing
Duration: 02:21
-
![]()
Why bats don't fly into walls—Series 1, Sensing
Duration: 02:30
-
![]()
Tigers have secret camouflage—Series 1, Defence
Duration: 02:51
