The nerve signal conduction speed in animals has an upper limit.
In the earliest nerves, the signal transmission speed was very slow, approximately just one meter per second.
This is actually the main reason why many animals can't grow to a large size.
The nerve conduction speed for insects is only one meter per second. If an ant were enlarged to over one meter in length, then if you tapped its tail, it would need about one second to sluggishly respond, and then the nerve signal would sluggishly reach its limbs.
However, if the insect is only one centimeter, its nerve signal can be transmitted in one hundredth of a second.
