Our Beagle mix, Scooter, had been having bloody diarrhea today and was really lethargic, so we took him to the vet tonight. The vet decided to keep him overnight. He had a temperature of 106, the vet said he has no parasites of any kind, but other than that he has no clue what's going on, but is leaning towards Parvo. They're hooking him up to IVs and a catheter... he said they'll run every blood test they've got, get his temperature down, and start him on broad spectrum antibiotics to see if anything helps. He just said to call in the morning, and we'll just hope he makes it through the night.