Nancy Diehl, VMD, MS, Author at The Horse

Nancy Diehl, VMD, MS

Prior to attending veterinary school, Dr. Nancy Diehl completed a master’s degree in animal science while studying stallion sexual behavior. Later, she completed a residency in large animal internal medicine at the University of Pennsylvania’s New Bolton Center and worked in equine practices in Missouri and Pennsylvania. Diehl also spent six years on faculty at Penn State, where she taught equine science and behavior courses and advised graduate students completing equine behavior research. Additionally, Diehl has co-authored scientific papers on stallion behavior, early intensive handling of foals, and feral horse contraception. Currently she is a practicing veterinarian in central Pennsylvania.

Can a Mare’s Personality Change After Her First Foal?

Posted by Nancy Diehl, VMD, MS | Aug 20, 2022 | Article, Behavior, Commentary, Equine Behavior Commentary Series, Foal Care, Foaling & Foaling Problems, Weaning

Dr. Nancy Diehl addresses a question about why a mare might respond differently to training after having her first foal.

How Can I Tell if My Horse is in Pain?

Posted by Nancy Diehl, VMD, MS | Oct 5, 2021 | Behavior, Behavior & Handling, Commentary, Equine Behavior Commentary Series, Horse Care, Injuries & Lameness, Pain Management

A veterinarian and equine behavior expert describes signs your horse’s behavior might be related to pain.

Messy Gelding vs. Tidy Gelding

Posted by Nancy Diehl, VMD, MS | Feb 29, 2020 | Behavior, Commentary, Equine Behavior Commentary Series, Farm and Barn, Healthy Farm Management, Horse Care, Stalls, Waste & Manure Management

An equine behavior expert addresses a question about two geldings with very different poop patterns.

Do Horses Recognize Humans?

Posted by Nancy Diehl, VMD, MS | Feb 25, 2020 | Behavior, Behavior & Handling, Commentary, Equine Behavior Commentary Series

Dr. Nancy Diehl shares research results that indicate whether horses recognize their people.

Why Do Horses Nicker?

Posted by Nancy Diehl, VMD, MS | Jan 30, 2020 | Behavior, Behavior & Handling, Commentary, Equine Behavior Commentary Series, Horse Care

Dr. Nancy Diehl explains what we know—and don’t know—about a horse’s nicker.

Why Does a Horse Lie Down?

Posted by Nancy Diehl, VMD, MS | Jan 2, 2020 | Behavior, Behavior & Handling, Commentary, Equine Behavior Commentary Series, Horse Care

Find out about equine sleep patterns from an equine behavior expert, and learn how to tell if the amount of time your horse spends lying down is normal.