TV commercial makes Pug howl

Enkei the pug has howled ever since he was a tiny baby at 8 weeks old, and he hasn't let this habit stop. We think it's absolutely hilarious! He does it usually if he hears something strange on the TV or if Sanka is having a bark he likes to howl along with him. But Sanka doesn't howl, ever. Or we are yet to hear it!
Enkei is quite well known with our friends and family for his howling and they think it's just comical! Everyone just laughs when he does this and can't stop, it's just too funny! I think Enkei thinks he is some sort of wolf or something. It's funny the way his head tilts right back to get the right noise out and his ears flap back to his head, sometimes he howls so much his voice goes a bit husk and faint. Silly Enkei! Have you ever heard a howling pug make this sort of noise? Or even a small dog like this making these noises? People always ask us what triggers Enkei to do this, or ask if we can try get him to do it, but it's impossible to get him to do it, he's very unpredictable. It's very spontaneous and we just have to be ready to grab the camera and record when it happens, just hilarious!