What Caterpillar is brown and red?

OOOOOOOOH you found one?!?!?!? THOSE ARE SOOOOO COOL!!!!!!! I have ALWAYS wanted one! Where do you find them? OH yeah your answer, sorry I got carried away. The caterpillar you described is that caterpillar in that child's book "The very hungry caterpillar"

I believe it is an Azalea caterpillar.