Kyoto Researchers Study Genetic Links to Cat Behavior

Kyoto, Japan — A team of researchers at the Wildlife Research Center of Kyoto University is conducting a study to investigate the genetic background of behavioral traits in domestic cats, Felis catus. This research aims to explore the relationship between traits such as purring and variations in the androgen receptor gene.

Despite their long history as companions to humans, many aspects of cats' behavior remain underexplored compared to other mammal species. The study specifically looks at how genetics may influence behaviors that are vital for feline communication and survival, including purring.

The researchers assessed the behavior of 280 neutered or spayed mixed-breed cats, all raised in households. DNA samples were collected and analyzed for variations in the androgen receptor gene, with comparisons made to other felid species.

First author Yume Okamoto, a doctoral student, noted the strong public interest in cat research, highlighted by the 265 responses from cat owners in Japan received in just one day.

Findings suggest a genetic basis for both purring and vocal communication. Cats with the short-type androgen receptor gene showed higher purring scores as assessed by their owners, while short-type males vocalized more toward humans. Conversely, female cats with this gene exhibited increased aggression towards strangers.

The researchers also observed that cats raised by humans, particularly those that are pure-bred, tend to have a decrease in vocal communication needs. Previous studies have indicated that pure-bred cats are more likely to possess the long-type androgen receptor gene, which was less prevalent among the mixed-breed cats in this study, many of whom were rescued former strays.

Analysis of the genetic data among 11 other Felidae species indicated that the leopard cat and fishing cat, closely related to domestic cats, only carried the short-type gene, while domestic cats displayed both short and long types. This suggests that the longer types might result from genetic changes due to domestication and selective breeding.

The implications of this research could enhance understanding of feline behavior and improve animal welfare by enabling more tailored care based on genetic predispositions. The research team plans to extend their studies to other felid species as well.

Okamoto commented, "Through our research, we hope to deepen our understanding of cats and contribute to building happier relationships between cats and humans."