There is a chart: https://www.nature.com/articles/s42003-021-02019-y/figures/2 https://www.nature.com/articles/s42003-021-02019-y/figures/2 Humans are above ra

There is a chart: https://www.nature.com/articles/s42003-021-02019-y/figures/2 https://www.nature.com/articles/s42003-021-02019-y/figures/2 Humans are above rats in this chart in both yawn duration and brain mass. Rats are above dogs though.