“Confused by logarithms? If so, you’ll be surprised to hear they come naturally to pigeons and possibly, subconsciously, to you.” [really?]
There are asymmetries in the way animals perceive numbers and time, and a recent experiment involving pigeons tapping levers in response to light flashes of differing lengths, showed that these birds underestimate the midpoint between two time intervals. This fits with a logarithmic model where pigeons might perceive time on a logarithmic scale on which higher values are increasingly compressed together.
Reminds me a bit of when my children were toddlers and counted “one, two, lots!”.