dakski- That's what I was getting at, that it mostly depends on the species. I'm not surprised your BP lost interest, since BPs depend mostly on their heat sensing pits, & motion. This just illustrates how differently the various species react- & how much (or how little) they use their vision. It's also why you can drop-feed some snakes & not others...some really go by scent, others not as much. Water covers a lot of the scent, so if you ever have to fish out dropped prey, it's best to dry it off on a paper towel before re-offering. You can also pinch-damage the nose to release a bit more scent that the water rinsed away, & depending on the species, you might need to re-warm it too.
I've had other snakes drop prey in the water bowl & lose interest, as if they thought it had scampered away? And most of the time, I haven't waited to see if they finally find it- I just fish it out & re-offer, but I got such a kick out of watching my Trans Pecos, because he never stopped staring intently at the mouse in the water bowl, & after a minute or so, he successfully pursued it- and like I said, he's a desert species, so I gave him a "gold star" for that. These (TPs) have large eyes & excellent vision- they don't much care if prey is warm or cool- & mine generally eat from tongs- with a little wiggle of the prey. Fishing was a whole new "skill" for him- And just for kicks, I'll try it again (deliberately) in about a week.