Why might a dog suddenly sniff the ground during a tense encounter?

The story behind the answer

Dogs often sniff the ground mid–face-off as a displacement or “calming” signal—behavior used to defuse tension and redirect stress. By breaking eye contact and focusing on the ground, they lower arousal and communicate “I’m not a threat,” helping both dogs de-escalate. It’s different from food-searching or gathering scent on the other dog because it appears suddenly in a tense moment and isn’t directed at a specific odor source.

Trainers group this with other calming signals—yawning, lip-licking, shake-offs, and curved approaches—terms popularized by Turid Rugaas. Quick memory tip: S