Cleaning cage out last night (it's a cage over run type) and found what I thought was half a worm. It was around an inch long, grey/brown - a bit like a dried out worm colour but felt squidgy to touch so wasn't dried out. Assumed it was a worm and chucked it across garden but then came across a couple more just outside the cage. Picked one up with a peg for closer inspection and it was defo alive. It looked more like a caterpillar than a worm but had no hair/fur. Any ideas? Should I be worried? It was defo too big to be a maggot - and I may be wrong but I'm sure fly maggots are white so im positive it wasn't. Bunny bums checked just incase but nothing there