How much percent of the brain does the dolphin use?

Dolphins are believed to use a significant portion of their brain, with estimates suggesting they utilize around 80-90% of their brain capacity. This high level of brain utilization is associated with their complex social behaviors, communication skills, and advanced problem-solving abilities. However, it’s important to note that the idea of "using" a certain percentage of the brain can be misleading, as different brain regions serve various functions and are active at different times.