You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who has the largest brain in comparison to its size?" whose answer is small ants.
Each document should contain about 30 words, and these documents should contain useful information.

Query: largest brain relative to body size in animals
Useful Output:

Doc 1: "Elephants have a larger brain than humans in absolute terms," says Lefebvre. "Does this mean they are smarter than humans? Not necessarily, if
Doc 2: Elephants are a paradox with 257 billion neurons and much bigger brains compared to our puny 86 billion neurons. And this does not account for
Doc 3: Sperm Whale - The brain of a sperm whale is the largest, the sperm head constitutes 25-30 percent of the whole body length. · The Killer Whale - It is also a sea
Doc 4: Rather, we refer to mammals as big-brained when their brain volume is large relative to their body mass. There are many examples of
Doc 5: It is believed that animals whose brains are large relative to their body size are highly intelligent—and now a new study supports that theory.