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With over 30 years of experience, Tammy Siert is an international speaker, judge and a Global Educator for Andis Company. She was also a contest judge at this year’s GROOM’D. She led “Difficult Dog Days: Handling Challenges in the Salon,” a session focused on those challenging times when you’re dealing with anxious or aggressive dogs.

In her “Difficult Dogs” session, Tammy Siert offered advice on how to create calm in the salon and in client dogs.
Siert gave attendees an honest and practical look at how to create a calmer, safer, and more efficient work environment for both groomers and pets. She explained that many instances of biting or aggressive behavior in dogs are often due to pain. Common grooming procedures that can cause discomfort include dematting, ear plucking, anal gland expression, nail trimming, face grooming, teeth brushing, or having the dog stand for extended periods.

She recommends that if a dog tends to be aggressive or anxious, groomers should develop a consistent routine so the dog knows what to expect. For example, if a dog is uncomfortable with a specific procedure, like face grooming, complete that part first before moving on to the rest of the groom. The same approach applies to nail trimming. She suggests starting with the rear paws first to help the dog adjust gradually.
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Siert shared strategies for creating a calm, low-stress grooming environment. Key tips included always remaining calm and composed, giving an anxious or aggressive dog a break when needed, and closely observing body language, since most dogs show early signs of discomfort, such as ears pulled back or changes in their eyes, before becoming aggressive.
She also suggested simple ways to reduce regular salon stress by creating a calming environment:
- Playing calming music
- Using a soft voice
- Placing cotton in dogs’ ears to avoid sensory overload (like other dogs barking)
- Using restraints like harnesses, belly bands, muzzles, and e-collars if necessary
- Ask for a coworker’s help,if necessary
Supplements can help as well, though Siert recommends having owners administer them. Calming aides may include melatonin, essential oils such as lavender balm, CBD treats or oil, and Mellow Pet Calming Spray. She noted that exercise before a grooming appointment can help calm some dogs. If a dog continues to show aggressive behavior despite these efforts, it’s best to recommend a visit to the veterinarian to discuss possible prescription medication options.
Read more PETS+ coverage of GROOM’D 2026.