CrittEar: Dog earplugs are here! CrittEar makes the first of it's kind, patented , in-ear noise blocking hearing protection for dogs! It's veterinarian approved and made in the USA! It's for dogs that have noise phobia or anxiety from thunder, fireworks or other loud noises. Works for working dog, including therapy dogs, military dogs, law enforcement dogs, and search & rescue dogs! And provides perfected hearing protection for all dogs. Dogs Can't Fear What They Can't Hear!