Research conducted by Associate Professor Culum Brown at Macquarie University has examined the ability of guppy fish to count.
“Our experiments show that fish with strongly lateralised brains could differentiate between three versus four objects, both in natural and artificial contexts, whereas those with non-lateralised brains could only differentiate two versus three,” said Associate Professor Brown.
There are lots of reasons why it might be important for animals to keep track of objects or accurately compare sets, mostly relating to safety from predators. The results from this study are useful when trying to understand why animals and humans have evolved lateralised brains.
[img source] Liesel Elliott (CCA2.0).
The above story is based on materials provided by Macquarie University.