Study Finds Cats Can Distinguish Between Owner's Scent and Stranger's

In the experiment, the cats were presented with plastic tubes containing cotton swabs. Each swab held an odor from either their owner or an unknown person of the same sex, as well as a control with no odor. The scents were collected from various body areas, including underarms, behind ears, and between toes.

Results revealed that the cats spent more time sniffing the cotton swabs containing the scent of an unfamiliar person, indicating they were already familiar with their owner’s smell. This suggests that while cats may seem indifferent, they are aware of their owner's scent.

However, the findings do not confirm that cats can identify specific individuals based solely on scent. Behavioral experiments involving known-person odors are needed to verify whether cats exhibit distinctive reactions to their owner's fragrance, according to researcher Hidehiko Uchiyama.

The study also included an analysis of video recordings where it was observed that cats tended to sniff familiar odors using their left nostril, while unfamiliar scents triggered right nostril sniffing. This pattern aligns with similar behaviors noted in dogs and other animals. Uchiyama theorizes that the left nostril might be associated with familiar, comforting scents, while the right nostril deals with new or alarming odors.

Carlo Siracusa, an animal behavior researcher not involved in the study, cautioned against directly linking nostril usage to brain function without further research. He mentioned that the study did not provide evidence that the right side of the brain was specifically activated.

Additionally, cat owners completed questionnaires regarding their pets' behaviors, which indicated that neurotic male cats were more likely to repeatedly sniff the tubes, while more relaxed males were content with shorter sniffing sessions. The personality traits of female cats did not appear to influence their sniffing behavior.

Overall, while more studies are necessary, Siracusa praised the researchers for engaging 30 cats in this investigation, acknowledging that many cats may not cooperate in such settings.