Paw preference in rats

Area of Science:

• Neuroscience
• Animal Behavior
• Comparative Psychology

Background:

• Paw preference, or lateralization, is a common trait observed across many animal species.
• Understanding paw preference in rodents is crucial for behavioral neuroscience research.
• Previous studies have explored handedness in various species, but comprehensive data in Sprague-Dawley rats is needed.

Purpose of the Study:

• To investigate paw preference in a large cohort of Sprague-Dawley rats.
• To determine if a correlation exists between paw preference and gender in this rat model.
• To compare rat paw preference distribution with that of other animals and humans.

Main Methods:

• A food-reaching test was employed to assess paw preference.
• 114 Sprague-Dawley rats were utilized in the study.
• Data on paw usage (right, left, or both) was systematically recorded.

Main Results:

• A significant majority of rats exhibited paw preference: 70.2% were right-pawed, 19.3% were left-pawed, and 11.9% were ambidextrous.
• No statistically significant differences in paw preference distribution were observed between male and female rats.
• The observed distribution of paw preference aligns with findings in other animal models and human handedness.

Conclusions:

• Sprague-Dawley rats display a clear population-level paw preference, predominantly right-sided.
• Gender does not appear to be a significant factor influencing paw preference in this rat strain.
• The findings support the generalization of paw preference as a conserved trait across species, including rats, other animals, and humans.