Signs that a dog feels calm and content include a relaxed posture (muscles relaxed, not tensed), normal breathing or slight panting,
eating at a normal pace, wagging and wiggling.
In making this connection, Canadian biologist Siegfried Hekimi and his colleagues
at McGill University in Montréal, Québec, looked
at clk -1-mutant nematodes and found that they develop,
eat, defecate, and even move
at a more relaxed
pace than their
normal counterparts.