It is important to understand why sub-q's are given in the first place and each case should be discussed with a ferret knowledgeable vet. Sub-q's given to a ferret with undiagnosed heart failure can cause the situation to worsen or even death of the ferret. Some ailments can be delayed in diagnosis by improper use of sub-q's. There are different mixes of fluids and not all ferrets require the same kind of fluids. The type of fluid required for a specific ferret needs also to be determined through consultation with a vet. Sub q's should only be administered to ferrets under vet care that have had it fully explained to the owner the circumstances by which fluids should be given. Any person who is interested in learning how to do administer ferrets, should have their vet show them how to do it properly. There are many of us who have saved the lives of ferrets by knowing and understanding the circumstances by which fluids can be administered safely. But if for any reason you are unsure whether or not you should give a ferret fluids subcutaneously, it is best not to do so and get the ferret to the vet as soon as possible. betty and her blur o'fur for the love of ferrets [Posted in FML issue 4408]