all fed on dry cat food biscuit no raw flesh given in the last week. the food is 15kilo sacks breederpack obtained from a livestock feed supplier i have used it for over 10 years with no problems all other ferrets are in pristine condition im about half way through a sack so its notlike its a bad batch or something ferrets are in a shed that is locked and my father was in the shed next door all day so no chance anyone got in to tamper with anything no change in there food consumption no excessive drinking just normal faeces are light to dark brown solid in formation nothing out of the ordinary