Animal personalities can trip up science, but there’s a solution

Several years ago, Christian Rutz began to question whether he was giving his ravens enough credit. Rutz, a biologist at the University of St. Andrews in Scotland, and his team were catching wild New Caledonian crows and challenging them with puzzles crafted from natural materials before releasing them again. In a test, the birds were … Read more

Sea spiders can regrow body parts, not just limbs: study

This undated image provided by the University of Greifswald, obtained on January 23, 2023, shows a fully regenerated adult male sea spider Pycnogonum littoral (dorsal view, cuticular autofluorescence after blue light excitation). | Photo credit: AFP Sea spiders can regrow body parts after amputation and not just limbs, according to a study released Monday that … Read more