What could white gooey smelly stuff on the behind of a female hamster be?

Answer:
It is the yeast from the hamster which is a natural process.
It usually means she is in heat, which usually occurs every 3-5 days.

Answer

She is in heat. Female hamsters come in "heat" every 4 days. The creamy "stuff" will also smell.
First answer by ARN. Last edit by Iceyblue 007. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 63 [recommend question].