Why do many Vine Snakes refuse to eat rodents as a food source?

Answer

They are highly specialized predators evolved to hunt agile, slender prey

Vine snakes are highly specialized predators that have evolved to hunt agile, slender prey within tree foliage. Their biology and hunting instincts are hard-wired for lizards and small frogs rather than the bulky, warm-blooded mammals that make up the typical diet of ground-dwelling snakes. Because of this extreme dietary specialization, they often outright reject rodents, including pinkies, regardless of how they are presented.

Why do many Vine Snakes refuse to eat rodents as a food source?
dietreptilesnakeVine Snake