I used to think that cats could see so well in the dark because they had glow-in-the-dark eyes ["shiny eyes"]. I would stare at the sun to charge up my eyes so I'd see better at night.
animals
3,621 beliefs in this area

I used to believe that if a cat didn't have a little patch of white fur under their chin, they wouldn't be able to purr. My father called it "purr-fur" and whenever we met a new cat, he would show me where the white fur was (not always visible to my eyes) and then tickle the cat until it purred.
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I used to believe the earwig one as well (the one where they would crawl into your ears and lay eggs etc).
And Amy (below), no it isn't true.
My dad tricked me, my brothers and my sister into thinking that cows were all carnivorous and that they weren't really eating grass, they were searching for small animals under the ground.
My sister always told me that most creepy crawlies, but especially flies all might be pregnant so if a fly was in my room at night it would lay eggs in my ears and in my hair when I was asleep. I am now nearly 29 and still cannot sleep in a room that has a fly in it. Or a spider come to think of it.
I used to believe that zebras were like strange horses with stripes.
When I was in Kindergarden my parents brought home a puppy and told me it was a Collie puppy since I loved the show 'Lassie' so much. I believed them for years, and patiently waited for the puppy to grow, later to find out it was a chihuahua.
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my brother, at age 18, said in all seriousness to me that the reason why my cat is so flexible is that it does not have a backbone.
I had a really smart dog, Sandy, a Sheltie. She knew when you were going to take her for a walk, recognized the words "go for a walk," and that kind of thing. She really was a great and intelligent girl. But she couldn't actually speak. That's where I was incorrect. I would spend an hour or so maybe once a week, after school, alone in the house with Sandy, pleading with her to chat with me, and often promised that I would protect her, and never let them give her a lobotomy. She held out. I'm still not convinced, though.
once when i was around 4 or so i was in the car with my mom, when memories by barbara streisand came on the radio. my mom told me in a very serious manner that a cat sang that song. i was extremely impressed and of course tried to coax the family cat into singing. even though she didn't burst into song, i kept at it for about a week until my brother figured out what i was doing and broke the news to me. cats really can't sing. i still haven't gotten over that heartbreak.
My 11 year old son is pretty smart-- he's on the honor roll at school-- but until recently he thought cats could understand English. He was very concerned that when I called one our cats a "reprehensible quadruped" it would hurt her feelings.
I thought that the reason there weren't any unicorns was because they had all been driven into the sea (due to Noah forgetting them or an evil wizard, I never could decide which) and had become Narwhals, which are a type of whale with a sharp unicorn like horn on top of their head that I found in my National Geographic book of animals.
It was a strange fusion of ideas, but hey, the europeans were fooled by narwhal horns for years and counted them among religious artifacts.
Two things really. First was from my Grandmother, that Dragonflies were in reality spies for children with bad language and when hearing a dirty word uttered by a child, would respond by sewing the child's lips together! Second from my Mother, was that Grasshopper's would spit tobacco juice when picked up. I still get uneasy when I see a Dragonfly!
I never believed that all dogs were boys and all cats were girls, but I did believe that you could tell which cats were boys and which were girls.
Boy kitties have white feet--all our boy kitties had white feet and none of our girl kitties did.
My cousin and I were constantly on the lookout for crawdads whenever we went to the creek every summer. After all, we were told that if one got you with it's pinchers, it would stay there until it thundered. Needless to say, we practiced sounding like thunder too (BOOOM!!!), just in case it ever really happened.
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I used to believe that doberman pincers were called dogman snippers
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... ... Ponies AREN'T baby horses? Er.
Oops.
When I was little my mom told me that little animals used to live in the shells we found on the beach. I wanted one of those miniature giraffes and elephants so bad!
I used to belive that if you killed a LAdyBug that you would soon die just because my brother's friend said so. Just so you know don't trust everything you hear.
I was about four when i decided that my cat's whiskers hurt her like quills stuck in her face. She was quite unhappy when I cut them off to make her more comfortable. . . .