I have an adult patternless burm that will take food, have it in her mouth as if she is going to swallow it but doesnt. She will roll around the cage as if she wants to eat so bad but doesnt. She will let the prey item go, smell around it and starts again. She gets it in her mouth but thats as far as it goes. I have had this burm since it was a neonate. She is going on three years old and has even bred for me. Just one day she started this. Never any problems before. I have checked her mouth and everything looks fine. Any advice or help would greatly be appreciated. Thanks