狗狗最害怕什么声音？
首先，人耳能听到的部分声波范围是20Hz—20KHz。在这个范围内又可以分为低频、中频和高频三个区域。而狗的听觉范围是4Hz-45KHz，人类的听觉范围只是狗的听觉范围的1/6左右。 也就是说在人类听不见的部分，有些声音对狗来说却是响度很大的“噪音”了——当然这些频率我们也是听不见的。而这些声音就是导致狗产生恐惧感的源头之一。 以下列出的都是人耳不能听见的声音，但它们会对狗造成一定程度的刺激并引起它们的不适（比如耳朵内充血肿胀等）甚至恐惧感或攻击性。
Bats： Bats can be scary for dogs. Not only are they fast enough to dodge a bite， but if they get on your dog's back and start chirping at him in the dark， it would certainly keep him up all night！ Dogs also have an intense fear of being swallowed whole by bats because this is actually what happens when prey is grabbed！ A frightened bark or growl will probably not help you keep one from attacking your dog (although some experts say that it might) – so best to avoid them altogether！
Chatterbox： This is another sound that has very high frequency content that we cannot hear， but our furry friends can！ So basically any type of motorized activity makes a good potential noise phobia trigger. If you live near a busy road with lots of cars passing through every day， chances are your dog will suffer from car chatter！ It doesn't matter whether there are people sitting inside as well; loud engine sounds， tires screeching and horn honking seem to do the trick！ The higher the speed limit， the louder the noises become， leaving more time for stress-related ear problems. And don’t forget about aircraft either…
Fireworks / Pistols & Revolvers： We really hope these aren't part of your Fourth Of July celebration， although most likely even those who know their dogs well will let off just a few fireworks before making sure everything settles down again！ You see， while many dogs will run away into the house when hearing a firecracker go off nearby， others feel like charging forward trying to figure out where that loud sound came from！ Either way， both situations put your pooch behind enemy lines without backup until things calm down again…… Guns make great noise-scarers too！ Some dogs find pistol shots frightening simply due to how loud they are， while revolver and rifle reports sound so close together in succession that it may confuse a scaredy-pooch into believing he saw a gun