Hurly is a three year old, three and a half foot long, supposedly male BP. I don't have his weight in grams as he hasn't been to vet this year yet. He was eating small rats, but transistioned to small-medium ones this year. The small-mediums are a bit big for him. He only eats once a month and if given food at two week intervals, will not touch it at all until at least a month has gone by. Is this okay? He does look a little on the plump side to me. I'd do pictures but can't figure out how with new laptop.The vet we were seeing said eating small-mediums would increase his head and jaw size. Is this true (this is the same vet that said tube-feeding blenderized rat to a boa would be okay)?