Kimberly and KN both have good ideas. It's best to stay away from things like Craigslist and such. You never know what intent those people may have. F of F and the humane society have a genuine concern about the well being of the animals and will do their best to keep them together. Hopefully you have time to get them the forever home they deserve and keep them together.
Perhaps speak to Friends of Felines?
WHS will try their best to find a forever home for them as a pair but can't guarantee they will be adopted together.
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