Why Dogs’ Paw Choices Matter
Most people instinctively reach for a right‑handed pen, but dogs don’t follow a uniform rule. While a majority of canines show no collective bias toward the left or right paw, many individuals consistently favor one side. Researchers believe that the strength of this preference offers a window into a dog’s emotional state, stress levels, and overall wellbeing.
Introducing the Doginburgh Inventory
Inspired by the well‑established Edinburgh Handedness Inventory for humans, an Italian team from the University of Bari created a canine counterpart: the Dogenburg Inventory. Rather than relying on a single task, this new tool fuses four distinct challenges into one composite score, capturing both which paw a dog prefers and how strongly it leans that way.
Four Tasks, One Comprehensive Score
The inventory assesses dogs through two “grasping” tests and two “movement” tests. In the classic Kong test, a dog must hold a treat‑filled toy steady with one paw. A second task asks the animal to reach for a piece of food hidden just out of reach beneath a piece of furniture. The movement tests examine how a dog steps down a staircase from a standstill and how it navigates a modest rise during a regular walk – the latter being a novel, dynamic scenario that mirrors natural locomotion.
From Paw Strokes to Numbers
Each trial records the number of left‑ versus right‑paw selections, converting them into a percentage scale ranging from 0 % (exclusively left) to 100 % (exclusively right). The four percentages are then merged into a single profile. To gauge consistency, the researchers added a “preference index” that discounts isolated spikes and rewards a steady bias across multiple tasks.
What the Data Reveal
Out of 47 healthy, non‑neutered dogs spanning various breeds, 43 completed at least three of the four tests and entered the final analysis. As a group, the dogs displayed no dominant side. However, when examined individually, most exhibited a clear asymmetry, choosing the same paw in the majority of scenarios. The new scale expands beyond the traditional three categories (left, right, ambidextrous) to five, distinguishing weak and strong preferences on both sides.
Implications for Confidence and Welfare
The strength of a dog’s paw preference appears linked to its self‑confidence. A strong, consistent bias may indicate a secure, less stressed animal, whereas a weak or fluctuating preference could signal uncertainty or heightened anxiety. By providing a reliable, multi‑task measurement, the Doginburgh Inventory equips veterinarians, trainers, and owners with a novel behavioral marker to monitor emotional health.
