Interestingly, the females prefer the smaller males over their beefy counterparts, according to McAnulty, indicating they"re selecting brains over brawn. "Studies have even shown that when the females go to lay their eggs, they will give a larger proportion of fatherhood to those sneaky males," she said. "So, when we ask ourselves how those darn cephalopods got so smart? Well, they"re sexually selecting for it!"