ENS & ESI Benefits

Written By Taylor Beck

What is Early Neurological Stimulation (ENS)?

Early Neurological Stimulation (ENS) is a short series of daily exercises for puppies, developed by the U.S. military to strengthen a dog’s long-term health and adaptability. From days 3–16 of life, each puppy experiences five quick activities:

  • Held upright

  • Held with the head pointed down

  • Held on their back

  • Gentle toe stimulation with a cotton swab

  • Placement on a cool surface

These small steps stimulate the neurological system, which can lead to:

  • Stronger cardiovascular health

  • Greater stress tolerance

  • Enhanced immune system

  • Improved learning ability

ENS is about building resilience, preparing puppies for life outside the whelping box.

What is Early Scent Introduction (ESI)?

Early Scent Introduction (ESI) focuses on stimulating a puppy’s incredible sense of smell. From days 3–16, each puppy is introduced to a new scent daily — such as grass, herbs, leather, or fruit. Their reactions are observed and noted.

Benefits of ESI include:

  • Increased brain development

  • Boosted curiosity and confidence

  • Better adaptability to everyday smells

  • A foundation for potential scent work (therapy, service, or hunting)

Even for family pets, ESI builds confidence and curiosity in exploring the world.

Taylor Beck
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