Collie/Sheltie Health

Collie Health: About 70% of Collies have a genetic predisposition to adverse drug reactions involving over a dozen different drugs. Some of those drugs include several antiparasitic agents (i.e. heartworm and flea medicine) (common examples are ivermectin, milbemycin and related drugs), the antidiarrheal agent loperamide (imodium), and several anticancer drugs (vincristine, doxorubicin, others). For a more complete list, see the chart from Washington State University below. Additionally, several foods are toxic (some lethal) to all dogs.