It may be related to their living environment, genetic factors and individual differences. The ferocity of donut turtle may be related to its living environment, genetic factors and individual differences. Donut turtles are native to rivers, lakes, ponds and swamps in the United States and Mexico. The competition in these environments is fierce, which may lead to the fierce character gradually formed in the evolution of donut turtles.
The genetic factors of donut turtle may also affect its behavior, making its offspring aggressive to varying degrees.