Do ultrasonic sounds hurt dogs?

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Tags

1. #there
2. #irritating
3. #powerful
4. #instance
5. #sounds
6. #signs
7. #ultrasonic
8. #pitched
9. #chance
10. #enough
11. #their
12. #potential
13. #style
14. #humidifier
15. #sound
16. #frequency
17. #hearing