They may have, but it is not the size of the brain that matters, it is the knowledge contained therein that is important
little brains
Non!
No, plants do not have brains. Only vertebrate animals have brains, although invertebrate animals do have a comparable organ that controls their nervous systems.
Yes. Almost all Mammals and Oviparous have brains. Like Humans.
No animal really "detects" magnetism, however animals do use magnetism such as: Pigeon's. little Ions in their brains' line up with the Earth's Magnetic field (EM Field).
Monkeys
they all have brains
Some examples of big animals with relatively small brains are elephants, blue whales, and sperm whales. These animals have massive bodies, but their brain size in proportion to their body size is smaller compared to other animals.
If they don't have brains then they must not be alive so they dont have to sleep!!! What a stupid question!
Yes. All animals have brains.
Of course! All animals have brains, no matter how unintelligent they seem.
Mammalian brains evolved from reptilian brains (simply instinctive), develop feelings and can alter instincts through experience.