When filling Snuggles, you must take care that the Snuggles are not easily opened. Use layers of material (such as flannel or terry cloth) for filling. Polyester or cotton batting is not recommended as the batting is easily torn out by a hyperactive animal. Most shelters will not accept Snuggles filled with batting as it is too messy and may cause health problems for the animals if the animal should get at the batting.
But we have found a nice way around this: double stitch the hems and stitch over the snuggle with a cross-hatch or other pattern. This will hold the snuggle together and the shelters will accept these without a problem.