Squids are said to be among the brainiest invertebrates in the world. Their brain structure is different from other invertebrates in the ocean, as they share complex features similar to the human brain. Like human beings, squids can be very curious about their environment. They have the ability to learn new skills and develop the capacity to use tools that can either help them repress their boredom and protect them from harm.
Spiders are among the smallest creatures to possess a proportionately high level of intelligence. Especially the White-Mustached Portia spiders. These spiders dwell African; Asian; and Australian forests and have demonstrated special learning skills.
Though they are small, they have the ability to creatively withstand calamities that would that would wipe another species. Ants are often seen coordinating in massive groups to build nests and hunt for food; and they accommodate to their environment very well. All notable points when it comes to measuring intelligence.
Baboons are old world monkeys who have cognitive abilities very similar to chimpanzees and orangutans. In terms of the way they behave, one can see how these creatures resemble people. Unlike other animals, studies show that at some level baboons know how to identify stress and cope with it. They create extremely complex social systems and can think critically when confronted with difficult situations.
Studies have shown that sea lions possess the ability to think logically and can actually deduce if a=b and b=c, then a=c.