I adopted a 6yo dog several months ago and last week he suddenly had a high fever 106 with no other symptoms. After 5 days in ER on IV fluids/antibiotics and many tests/blood work (including test for Tick diseases)chest xrays and ultrasounds no cause was found and I brought him home. He has been home for 4 days and his temp continues to fluctuate between 103 and 104 . The specialists claim nothing more can be done other than invasive tests like bone marrow etc. He is eating and drinking altho appetite is off. I feed a raw or home cooked diet with holistic supplements etc. Thanks for any ideas of what to look for next or what to do for him.

