Dog Health
Why Is My Dog Sneezing?
Quick answer
**Occasional sneezing is normal** — dogs clear dust, pollen, and strong scents from their nose. **Frequent sneezing with green or bloody discharge, one-sided symptoms, pawing at the face, or loss of appetite** needs a vet — often infection, a grass seed in the nostril, or dental disease. Reverse sneezing sounds alarming but is usually harmless.
Key takeaways
- Sniffing stirs dust, pollen, and grass particles into the nostrils. Some dogs also 'play sneeze' during excitement — a short burst of sneezes while bowing or playing is normal social behaviour, not illness.
- Yes — blood from one or both nostrils needs urgent vet assessment. Causes include foreign bodies, fungal infection, dental abscess, trauma, or tumours. Do not wait to see if it stops on its own.
The full picture
Causes, home monitoring, treatment options and the exact signs that mean call your vet — in the complete guide.
Frequently Asked Questions
- Can dogs get colds?
- Dogs do not catch human colds, but they get respiratory infections — kennel cough, canine influenza, and bacterial rhinitis all cause sneezing, coughing, and nasal discharge. Multi-dog households and kennels are higher risk.
- Why does my dog sneeze on the grass?
- Sniffing stirs dust, pollen, and grass particles into the nostrils. Some dogs also 'play sneeze' during excitement — a short burst of sneezes while bowing or playing is normal social behaviour, not illness.
- Is bloody sneeze an emergency?
- Yes — blood from one or both nostrils needs urgent vet assessment. Causes include foreign bodies, fungal infection, dental abscess, trauma, or tumours. Do not wait to see if it stops on its own.
- Do dental problems cause sneezing in dogs?
- Yes — infected upper premolars and molars sit close to the nasal cavity. An abscess can drain into the nose, causing one-sided sneezing, foul breath, and sometimes bloody or pus-like discharge.
Reviewed 2026-06-25 against UK veterinary guidance · Information only — not a substitute for seeing your vet.