Stingrays Can Do Math

They can add and subtract, but we still don’t know why

Image courtesy of the author

A study published in Scientific Reports says that some fish have surprising mathematical abilities. It’s been known for some time that cichlids and stingrays have a sense of how many objects they’re presented with (usually between one and five items). Now, a team of zoologists from the University of Bonn has demonstrated how these animals can do more advanced…