Chang Chi-ming says in fall and winter, during their breeding season, two males will fight over a female and the female gets "squeezed" so tightly by them it looks like she can't breathe. It is all played out on the school grounds, and teachers use the opportunity to teach about reproduction and competition in the animal world.
張啟明表示，每到秋、冬繁殖季節，兩隻公蟾蜍同時爭奪一隻母蟾蜍，而母蟾蜍狀似被「擠」得喘不過氣的場景，就活生生在校內上演，老師也會趁機教育小朋友生命繁衍、生存競爭的道理。