I used rice cereal with the raccoons I had in the spring, but not with squirrels. Squirrels seem to be interested in real foods moreso than the coons, so I give the fruits, nuts, seed mixes for them to supplement the formula. Raccoons are different, they develop faster as far as from when I get them, to when they eat on their own, and seem to have 2 modes, formula, and NO formula (weaned). Squirrels are slower about that, which gives more time for them to play with the other foods while enjoying their formula. I guess my thoughts are, why thicken, if they are willing to nibble on other things? Let them eat what they want of what I offer, then supplement with the formula. This seems to work quite well once they are mobile (I keep mine caged rather than in aquariums, so I can tell when they are ready, they start playing with the cage bars, climing, and nibbling their blankets, when they are that curious, throw in some grapes broken in half, and expand from there. They start out just sucking out the pulp, but move on from that quickly. Of course, each person who does rehab, has different methods, and if your mentor says "NO, don't do that", then you should listen. My mentor is pretty laid back, if something is genuinely a bad idea, he tells me, but otherwise says "give it a try, see what happens", and I do, so far, so good! You will learn what works for you personally and what doesn't as well, despite mentor suggestions. Sounds like they are doing good tho!
Joker
