http://www.newsweek.com/vets-warn-owners-dogs-getting-high-cannabis-after-eating-feces-1651229

Pet owners have been issued a warning after a study found that dogs may be getting high—and sick—from marijuana residue in human feces.

The study, written by two vets from the Australian state of Victoria, looked into historical cases of dogs exhibiting signs of what vets call marijuana toxicosis—negative health effects after exposure to the drug.