Re: Long Just about anything you are happy to feed your dog . The trick is just to get it to the right consistency to squish in. The easier it is to get out, the quicker the dog finishes the kong (eg dry kibble will just tip out). Mashed fruit and veg is popular. I freeze most kongs, if only for 30 mins or an hour, to "firm up" the contents, making it last longer. Frozen kongs can be filled with anything - water from sardine tins etc. You can put kibble in the liquid (and let it go soft) or just put the dry kibble in the liquid and freeze (I find you use less kibble this way if you need to keep an eye on the food volume). Bulldog clips keep the ends closed until the liquid freezes. For the ultimate kong, I think you need a bit of structure. Gravy bones are ideal because you can ram them into something soft (a bit of chicken) and then wedge them under the rim. Then fill the gaps with something. My current tatic is: Chicken in the bottom, a single layer of dry kibble rammed into the chicken with the end of a wooden spoon. Bit more chicken. 3 or 4 gravy bone biscuits shoved into this layer and tucked under the rim, mashed up kibble mixed with chicken (more kibble than chicken) fills the middle between the gravy bones, and tiny bit more chicken and a hard sea biscuit is then pressed down into the top until the kong is as packed as a tube train in rush hour. Freeze for 30 minutes min. 3 of these are half his daily food allowance. If short of stuff, I soak kibble, mash in sardines, pack kongs with resulting sludge and freeze.
Re: Long Cuff ergo has a good idea in the recipe section of the forum. Simply smash some dog biscuits add some paste and water and freeze
Re: Long Julie you clearly have it down to a fine art ;D Frozen banana and kibble is our staple but stuffed kong are now more a treat than a necessity now Lilly is older. Just bear in mind that one day we over-stuffed with carrot batons and came back to it intact because she just couldn't get them out. Yep. It happened! ;D
Re: Long Charlie needs so many kongs! I've tried just about everything now - but I avoid processed things, and ready to use stocks, as the salt content tends to be sky high.
Re: Long Julie, you are Queen Kong. We smear peanut butter or honey inside mostly... Mashed sweet potato for a 'health' version.