Sue McDonnell, PhD, Certified AAB

Sue M. McDonnell, PhD, is a certified applied animal behaviorist and the founding head of the equine behavior program at the University of Pennsylvania’s School of Veterinary Medicine. She is also the author of numerous books and articles about horse behavior and management.

Articles by: Sue McDonnell, PhD, Certified AAB

Water Site Marking

My mare poops in her automatic waterer when she’s stalled. What can we do?

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Gelding Aggression

Are there behavior modifications we could try or training methods to deal with our gelding’s aggression?

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Incessant Licking

I have a very athletic 10-year-old, 17-hand Warmblood gelding who is very well-behaved. He doesn’t bite, doesn

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Mouthy Mystery

When my friend rides her Thoroughbred gelding in the arena, after doing several side passes over and over agai

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Signs of Equine Dementia

Old horses might suffer from some of the age-related structural brain changes that occur in other species.

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Stallionlike Communication

My husband and I trail ride frequently, and we both ride geldings. When my horse defecates his horse will walk

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