Euphorbia Sap
So you probably already know that Euphorbia sap, or latex, is poisonous. Some of the plants are merely irritating, while others are deadly.
We do occasionally recommend Euphorbia characias on the edge of a garden to help keep cats away, since it’s like cayenne pepper to the cat, but not particularly dangerous. But please don’t get it on your eyes or lips because it can be very painful.
Anyway, where was I? Oh yeah, euphorbias.
Here’s a website that list species and levels of dangerousness, and lots of individual stories too.
Mr. Subjunctive also has a good series of posts about poisonous plants, that I linked to previously.