I have a 2.5 yr old red bourbon that is not feeling well. He is barely eating and drinking. Is lethargic. Is not puffed up and strutting as usual. He lives free range with some wild turkeys and free range chickens. He is pooping liquid and some bright green. I am not sure what I should do as I cannot afford a vet. I live in Hawaii so warm year round. I was recommended a natural wormer (durvet- strike III) and 250mg oral capsules twice a day of cephealexin (he is between 30-40lbs). If anyone has some advice please let me know. Thank you.