This comes from my father. He was told in school that when Huskies are in the snow, and get very cold, they would breathe through their tails. He envisioned a dog covered in snow sticking its tail in the air and breathing through it.
He found out probably 40 years later, watching The Discovery Channel, that Huskies will cover their noses with their tails to make breathing the cold air easier. It finally made sense.
A childhood belief about cats and dogs

others believed things like this
- i was convinced that snow was pink, i was devastated the first i saw real snow.Anon
- That hot dogs were made from rat tails.Anon
- I used to believe that waves were made by whales who lined up in a row and flapped their tails.— Passionola
- I used to believe my father when he told me that if I sat on cold concrete I would get hemorrhoids.Anon
- My mum told me that cold custard (which I hated) was in fact Banana Blancmange. I lapped it up for years.— Chalky
- When i was little, i thought dogs poop from their tails.Anon