Thanks for your feedback! I kind of psyched myself out with the biting attack's hitbox size because it was pretty much one of the first things made for the project and I got too used to it. The ability to regain health was supposed to be implemented, but due to a coding error eating enemies doesn't actually contribute anything to that.
I intrepreted the concept of "consume" pretty loosely and it probably made a lot more sense when the game was devised where it was about eating blocks of darkness across a larger area. Thanks for the feedback!