I'm sure there's probably a very simple answer to this but between us we can't figure it out 
Recently got a kitten, our dog keeps eating her food. I've also spotted our kitten eating the dogs food.
I let Dog graze throughout the day, have tried set meal times at different times but have found access to food most of the day works best, so I can't constantly monitor the bowls. Have done the same with Kitten as she's young but as she gets older will probably do 2 set meals.
We feed them in separate areas of the house however Our house is completely open plan so no way to block access properly unless they're fed upstairs which I don't really want to do if can be helped. Have tried putting bowls high up as kitten can climb up but our dog can reach most high surfaces (although she's not allowed to, if she knows she can get away with it/won't be seen she still will).
Any suggestions?