12 month staffie has a bad habit of chewing everything and diggin up the garden/eating stuff she shouldn't. This morning she has puked a little in her bed and let her out in garden where she was circling and straining repeatedly then scraping her bum on floor. When i wiped her bum its dark brown and watery. She is quiet and not her usual loony self, not interested in squeaky toy even. She is also not drinking. She was totally normal yesterday, tucked into full Sunday lunch leftovers and playing as usual.
Do I assume she has a dicky tummy (we have had tummy bug here last week not sure if Dogs can catch off people) and give her a day to see if she picks up, or should I assume she has eaten something dire/got something stuck and take her to vets pronto? I'm more worried that she is quiet and not drinking tbh.