It's fascinating, isn't it? Even in an image ostensibly devoted to exalting violence—the diabolical alligator preparing to sever the chicken's spinal column—they manage to shoehorn a little sex into things. "Hottest tail in town," indeed.
It's as though they just can't help themselves. Violence without sex is unthinkable! It would be like barbecue without heart disease! And so, the superfluously lurid slogan.
Of course, what's noteworthy here is not the alligator and what his aims or motives might be. The reptile is just doing what reptiles do: destroy chickens, possibly after mating with them.
Turn to the chicken.
Even with his doom mere inches behind, with death's jaws about to close upon him, he seeks the end on his own terms. Hence, the headlong pursuit of the flames. The chicken doesn't flinch, doesn't waver. He has locked onto the fire and nothing else matters. It is all that gives his life (fleeting) significance.