Zebrafish appear to have numerical abilities at a very early age blickwinkel / Alamy Stock Photo
Zebrafish larvae may possess some primitive counting ability just days after hatching.
Several animals, including honeybees and , have been shown to have some form of numerical skill. For example, lab experiments suggest rhesus monkeys may be able to .
Numerical ability has also been seen in very young humans, with one study showing that number sense in 6-month-old babies is linked to three years later.
at the University of Ferrara, Italy,…
