Anthony Knight, BVSc, MS, Dipl. ACVIM

Anthony P. Knight, BVSc, MS, Dipl. ACVIM, is a professor of large animal medicine in the College of Veterinary Medicine and Biomedical Sciences at Colorado State University. He received his veterinary degree from the University of Nairobi, Kenya, in 1968. After completing a master’s degree at Colorado State University, he joined the faculty in 1974. His current professional interests include livestock heath, foreign animal diseases, emergency management, and plant toxicology. He has written two books on poisonous plants of animals in North America, and maintains a poisonous plants website for use by anyone wanting poisonous plant information.

Articles by Anthony Knight

Will Eating Grass Seeds Hurt My Horse?

We are new horse owners who know very little about horses. We've had our horse "Trouble" (a 2-year-old Standardbred-Arabian cross) for almost a week now. A local horseman said it would be fine to dump our two bags of buckwheat, red clover, and Read More

Black Walnut Tree Shavings as Trail Mulch?

Q: This summer we are planning to start making riding trails on our heavily wooded property. As we cut down the branches and trees, we plan to chip the wood to mulch the trails. However, we have a good number of black walnut trees, and I am wondering Read More

Is Millet a Problem in the Pasture?

I am considering moving my two mares to 10 acres of land that had been planted with millet feed last spring. Because of the lack of moisture, the millet only grew to be about five inches high, then dried out and died. I am going to wait and see Read More

Can Horses React to Poison Ivy and Poison Oak?

Q: There is quite a bit of poison oak and poison ivy on the acreage where I keep my horses. I have recently added a 2-year-old Thoroughbred mix, and she immediately broke out on her legs and muzzle with small rash-like, Read More

Mangoes Toxic to Horses?

Q: In our horse paddock there are four mango trees. Our horses often eat the mangoes that fall off the tree. We were wondering if it is possible for our horses to get sick from eating too many mangoes. A: Mango has not been reported Read More

Alsike Clover Poisoning

Q: I'd like to see more information on alsike clover sensitivity, especially in horses with large areas of white skin such as Paints, pintos, and Appaloosas. All the information I can find suggests that the only problem you will Read More

Oranges for Treats?

Can horses eat oranges? I just bought a 4-year-old gelding who apparently loves oranges. Read More

Fescue Allergy?

I have a 6-year-old Arabian gelding who used to spend up to about 12 hours a day on our fescue pasture. As a 4-year-old, he developed lesions on his three white legs on the cannon bone area that were crusty, raw underneath, very sore, and Read More

Guinea Grass Toxicity

I have a 12-year-old gelding that can't eat guinea grass (Panicum maximum), not even for three days, because it causes the hair around his face, neck, and belly to fall out in patches. As soon as he stops eating it, his hair grows back withi Read More

Skunk Cabbage Toxic to Horses?

Recently our horses have begun eating skunk cabbage that grows on the property. They have not done so before. They have plenty of grass plus hay and grain, all of which they also eat. One veterinarian says it is harmful to them; another says Read More

Mesquite Tree Beans Toxic?

My horse recently had a horrible colic episode due to mesquite tree beans. Every summer these trees produce large bean pods, which evidently taste like candy to horses. According to my vet, they also slow down gut motility--hence the colic. Read More