@misc{indiciaeb6157b2cdfee,
  title = {Why are some animals so smart?},
  author = {Carel Van Schaik},
  year = {2006},
  doi = {10.1038/scientificamerican0406-64},
  url = {https://pubmed.ncbi.nlm.nih.gov/16596881/},
  note = {Source identifier: 16596881}
}