> Dogs literally evolved a muscle to make them more appealing to (and help them communicate with) humans [1]. This scene from an 1953 Tom and Jerry of Spike te

> Dogs literally evolved a muscle to make them more appealing to (and help them communicate with) humans [1]. This scene from an 1953 Tom and Jerry of Spike teaching Tyke what it means to be a dog seems prescient: https://youtu.be/jnW48TihBR0?t=50s https://youtu.be/jnW48TihBR0?t=50s