'In the N. American species of this mammal, there are hundreds of microscopic barbs at the end of each quill'
the porcupine
VERTEBRATES: In the N. American species of this mammal, there are hundreds of microscopic barbs at the end of each quill
In the N. American species of this mammal, there are hundreds of microscopic barbs at the end of each quill
In the N. American species of this mammal, there are hundreds of microscopic barbs at the end of each quill
VERTEBRATES
the porcupine
VERTEBRATES