Last week, the pet sitter was playing with her outside
in the doggy pool and her tongue turned a blueish color. She put my dog
in a cool bath to calm her down, her tongue eventually went back to its normal color pink. She was perfectly fine after that. My pet sitter recommended about two hours later that we take her to the vet. We took her to the vet (she jumped in the car and walked in the vet perfectly fine).