My lab is of 2yrs 5months. He is not eating, complete inactive since three days. He had one episode of vomiting today. Loss of furr is present. No ticks and nights and dewarmed 3months back. What could be the reason?

Hi Suresh. It could be due to any infectious cause. I would highly recommend you to get a clinical examination done along with blood profile and serum biochemistry (CBC, LFT and KFT) as early as possible. She might require fluid therapy as well.