How a neurotoxin present in the venom can paralyze one type of prey but not another?

Neurotoxins in venom target specific receptor sites or ion channels in the nervous systems of different prey species. For example, a neurotoxin may effectively bind to sodium channels in the muscles of one prey type, inducing paralysis, while lacking the ability to bind to the same or similar channels in another prey species. Additionally, variations in the prey's physiology and biochemistry can influence the toxin's efficacy, allowing the venom to selectively incapacitate certain targets while leaving others unharmed. This selective action enhances the predator's hunting efficiency by tailoring the venom's effects to its preferred prey.