Authors - Pratya Nuankaew, Duangjai Pongsawan, Supan Tongphet, Thapanapong Sararat, Wongpanya S. Nuankaew Abstract - This research aimed to examine the use of student-pet interaction data to enhance understanding of university students' mental well-being. Descriptive and diagnostic data analyses were conducted. The sample comprised 40 students. Data collection was conducted using questionnaires to collect baseline information, characteristics of interaction with pets, and evaluations with the CCAS, PSS-10, and ST-5 instruments. The analysis revealed that the majority of students experienced a high level of attachment and comfort with their pets, with an average CCAS score of 3.57. The average PSS-10 score was 20.48, indicating moderate stress levels, and the mean ST-5 score was 7.43. Diagnostic analysis suggested that the duration of contact with pets, pet type, living conditions, and pet ownership status were potentially associated with students' stress levels. These findings may serve as an initial guideline for developing monitoring and support programs to promote the mental well-being of university students.