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the vet could find no health prolems that could make my two behave like they are but sugested that the hot humid weather could be upsetting them, as it does old people, also that it could be that the younger one has never had pups and has not been speyed she could be broody, since then she has eaten half a tin of tuna and a piece of dried tripe, both her fave things, i now suspect the crafty so and so is making a fool of me, thanks for your concern everyone.