I have a 17 year old Beagle who has refused to eat for 2 days now and I am not sure if it is his time to go. He is not in any distress, does not have accidents but is deaf and blind in one eye, has good teeth but now refuses to eat. I don't want to put him down if he is just sick but I am afraid that the vet will tell me that it's time. Do you think he is giving up?