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

Is He Sore, or Misbehaving?

Over the last few months, my horse has changed from a steady, reliable, and willing friend to a miserable grouch. He’s an 11-year-old Thoroughbred gelding that I have owned and used just for pleasure since he was seven years old, and I knew

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Ground vs. Breeding Mount Semen Collection

We have show pony breeding stallions, and as of last year are doing almost all shipped semen. This year we are seriously thinking about expanding our business to offer semen collection and shipping services for outside stallions, which will

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Narrow Doorway Aversion

 My mare has a particular problem with doorways, like stall doorways, small barn doorways, and even to some extent with the round pen gate. Big, wide doors are no problem, but with anything about four feet wide or smaller she will

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Foal Urination and Defecation

The first urination in foals typically occurs within the first six hours for females and the first twelve hours for males. Like defecation, the first urination in foals very often occurs soon after the first nursing.

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More on Panic Attacks

Readers Respond

August’s Behavior column (article #914) sparked heated debate about euthanasia for horses with incurable panic attacks. This month we feature two readers’ responses and the author’s comments.

It was a

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Retraining a Rebellious Colt

We recently had a foal who is now one month old. His mother has always been easy to handle in the cross ties or harness (she is a 20-year-old retired Standardbred), but is not a horse which can be caught easily in the pasture, and she isn’t

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Mare Savages Foal

Mares which unpredictably savage a foal in this manner typically savage again if given the opportunity

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Enjoying Veterinary Visits

In our referral equine behavior practice, we frequently rehabilitate horses perceived to be uncooperative with one or more veterinary procedures such as injections, nasogastric tubing, genital examination, etc. We have found that straightforward

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Teeth Grinding

What does teeth grinding mean? I think there is a horse in our barn that does it sometimes.

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