Toothed whale brain size with the expected brain size based on such allometric analysis provides an encephalisation quotient that can be used as another indication of animal intelligence. Sperm whales have the largest brain mass of any animal on earth, averaging and in mature males, in comparison to the average human brain which averages in mature males. The brain to body mass ratio in some odontocetes, such as belugas and narwhals, is second only to humans. Dolphins are known to engage in complex play behaviour, which includes such things as producing stable underwater toroidal air-core vortex rings or "bubble rings". Two main
Love on the Brain "As she implores 'Don't you stop loving me,' her performance has a grit, sweat, and weariness to it that's unusual and humanizing." Da'Shan Smith of "Billboard" stated "Love on the Brain" became the most subtly influential Pop single of 2017, as the music industry experienced "a prominent surge of retro-harkening balladry, across different musical genres", following the success of this song on Pop radio; which he described as "a rare find today, because traditional R&B’s presence on the format is an oddity." "Love On The Brain" received a nomination for Choice Music: Pop Song at the 2017 Teen Choice Awards.