How do dogs yawn?

📅 👁 4981 views 💬 12 replies Respiratory System
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A dog yawns by opening wide to enlarge the mouth, taking a deep breath and slowly exhaling over 2 to 3 seconds. Nostrils may twitch and eyes may tear; sometimes they stretch too, much like humans.

Occasional yawning is normal; frequent yawning may signal lack of sleep or poor nutrition.

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