I need a cheap RF camera

Does anyone know where I can get a small, very cheap, very low res RF camera? I want to put a camera on my dog's head and use it for a webcam stream. The camera needs to be kinda small but the size of the transmiting box doesn't matter as long as it is a seperate unit. At the recieving end I just need some kind of video out -USB would be fine too... Whatever.

Anyone heard of such a thing?

**It depends on how far you want to go… **

There are alot

http://www.sparkfun.com/commerce/product_info.php?products_id=156#

^^^ thats what you need have fun…

Inexpensive?
Define "cheap."