Yes
A mango has the potential to kill a mouse if it is fed mango a lot. It should be fed to a mouse very sparingly.
No, he will not die, but may have a tummy ache if he ate more than a few kernels. No reason to worry unless he stops eating afterward.
turn you into a mermaid or kill you
no
kill you
no
Kill them, kill them all
Five Minutes to Kill - Yourself - was created in 2009-11.
by eating them
No. It is an urban myth that eating rice will kill birds.
Probably not but you might burn your tongue, and feel sick after eating it.
If left untreated it can kill you.