im not really sure but i think its a worm!:/
i don't think there is an animal who does that. unless you found an unknown creature or its some kind of weird bug( which is not an animal) or you made it up.
a sponge does not have a nervous system
Neuroscience is the study of the nervous system in the animal body.
hormones
The nervous system is an essential part of life. Therefore you will not find a person or an animal without a central nervous system
bilateral nervous system
bilateral nervous system
bilateral nervous system
bilateral nervous system
The animal kingdom most commonly possesses a nervous system, which allows animals to sense their environment, process information, and respond to stimuli. The nervous system is responsible for coordinating various activities within an organism.
Nervous system.
bilateral nervous system