>>5045607
>they seem more intelligent
They are of course.
Larger brains interpret all the visual information. Hunting is much more complicated than just waiting in your net for prey.
They recognize other jumping spiders. If a similar size, they avoid each other. If one is smaller, it may turn prey. If they're the same species and opposite sex, the male may try his luck and initiate a mating dance.
One time I saw a male killing a much smaller different species jumper. He then gave it to a female, which then allowed him to pass on his genes with her.
As often seen in nature, she was just eating while he was doing all the work.
Pretty impressive behavior for such small creatures.