the rule of thumb is feeders should be no bigger than the space between their eyes. So , I'm wondering does that mean the LENGTH of the feeder or the WIDTH of the feeder? I'm thinking of trying larger crickets with our veiled cham but don't want him to choke either. He takes down fairly large hornworms and superworms without problem. Right now I would say he's got about an inch between the crests of his eyes. Thanks in advance.