A recent study involving twenty dogs and an eye-tracking system has revealed that the way humans communicate with their pets can affect how dogs respond. Researchers found that certain gestures commonly used by dog owners are less effective than others in getting a reaction from their canine companions. This study was conducted by ethologists at Eötvös Lorànd University in Budapest, and it included a border collie named Kun-Kun, who was relocated from Mexico to Hungary for the research. The researchers examined how dogs interpret human signals, such as pointing or gesturing, and how they respond to different languages. The study found that dogs can differentiate between their "mother tongue"—the language they are most familiar with—and a foreign language. This is the first evidence that a non-human species can distinguish between languages in this way, offering new insights into animal cognition. To conduct the research, the dogs were shown videos of human figures using gestures and speaking in either their native language or a foreign one. The eye-tracking system recorded where the dogs looked, helping the researchers determine how the dogs interpreted the signals. The findings suggest that dogs are not only sensitive to the gestures themselves but also to the language in which those gestures are presented. This study adds to the growing body of research on animal intelligence and communication. It highlights the complex ways in which dogs interact with humans and may have implications for how people train and communicate with their pets. The research also opens the door for further exploration into how non-human animals process and understand human language.