Which of these animals sleeps with only half its brain at a time?

Which of these animals sleeps with only half its brain at a time? Personally i do prefer to spend my free time solving and playing trivia quizzes on my phone. In this way not only i can exercise my brain and memory but also have fun learning new stuff. If you get stuck and wanna find the correct soltuion, then you can visit our site. All the answers and solutions of Trivia Quiz Questions can be found here. At this post we will reveal the correct solution of the question: Which of these animals sleeps with only half its brain at a time?

Which of these animals sleeps with only half its brain at a time?

Dolphins