what would happen if you feed a black widow, or any spider to your frog?

[Heatheranne]

...exactly what you think would happen, your frog would die and it would be your fault. It would be paralyzed, poisoned, spun, and preserved for a large dinner.

Not a great question on a frog-loving forum.

[arielgasca420]

black widows can kill humans if they are hypersensitive to that particular venom, but I asked our pest controller since we have a lot of black widows and he said most people experience pain and swelling. Now if a smaller animal (like a cat) ingests a black widow than it can cause vomiting, diarrhea, and in severe cases it may cause organ failure. our cat died of kidney failure and the vets only possible answer was that he ate a venomous spider in the garage. to be honest, that cat was well in his prime and it could have been old age.
It is best not to risk spiders or wild caught insects being ingested by any of your pets.
and yes, all spiders are venomous.

[GrifTheGreat]

The frog would not necessarily die. They eat spiders, ants, snakes if they are small enough, and many other foods that are dangerous if you're bitten, but normally would do no harm if eaten. Now you can't quote me on this because the strength of the toxin like Jess said plays a serious roll in whether ingesting it is fatal or not. Just because the bite is venomous doesn't mean if the entire animal or spider is eating will be fatal ,but its not worth the potential risk. even if it doesn't kill the frog it can quite possibly make the frog ill. I have heard of Wild Ceratophrys Cornuta having scorpions and stinging ants in their stomachs. Even so its not a thought that has crossed my mind since a Black Widow is not an actual food item that you can aquire as a feeder nor would you want to try and catch one.

Now I'm going to go out on a limb and guess that this was something you've seen on YouTube or torture tube as most of us would call it. I have seen a particular video with this specific spider being offered to a Pyxie Frog. Obviously this video was made by a very irresponsible owner who has a total lack of common sense and disregard for their frog's life. Don't ever take those videos on YouTube as being a good credible source of information even though there are many that are good the majority are just garbage and for nothing but a laugh or hits at the expense of the frog's life.

Keep that in mind.