Why does my dog howl at the ice-cream van?

As soon as she hears it, she runs outside and starts howling. A lot of other dogs in the area do the same. Does anyone know a reason why?I don't think the high pitch bothers her because when she hears it she gets excited and starts wagging her tail. By…

    Why does my dog howl at the ice-cream van?

    As soon as she hears it, she runs outside and starts howling. A lot of other dogs in the area do the same. Does anyone know a reason why?I don't think the high pitch bothers her because when she hears it she gets excited and starts wagging her tail. By…...
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