A morphometric right-left comparison of the cat olfactory bulb

Area of Science:

• Neuroscience
• Comparative Anatomy

Background:

• The olfactory bulb (OB) is crucial for scent processing in mammals.
• Understanding OB morphology in domestic cats (Felis catus) can provide insights into sensory adaptations.

Purpose of the Study:

• To investigate the relationship between body weight, brain weight, and olfactory bulb (OB) dimensions in cats.
• To compare the size and cellular structure of the right and left OBs.

Main Methods:

• Measurements of brain weight, OB dimensions (length, width, height), and cell layer thickness were taken from cats (2.3–4.8 kg).
• Statistical analysis was performed to determine correlations between body weight, brain weight, and OB parameters.

Main Results:

• A significant correlation was found between cat body weight and brain weight.
• OB size (length, height, width) did not significantly correlate with body weight.
• OB width showed a significant correlation with brain weight.
• No significant differences were observed between the right and left OBs in size or cell layer thickness.

Conclusions:

• Cat brain weight is a reliable indicator of body weight.
• Olfactory bulb dimensions are not directly proportional to overall body size in cats.
• Brain weight is a more relevant factor for OB width than body weight in this species.