When i was younger i was told that my two rabbits (one male, one female) could not be put into the same hutch as they would fight.
The true reason only dawned on me 3 years ago at the age of 22.
A childhood belief about general

others believed things like this
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- I used to believe all cats were female and all dogs were male.— Sabby
- I used to think that all cats were female and all dogs were male. — Annalisa
- i used to believe that all cats were female and dogs were male!Anon
- I used to believe that cats were all female and dogs were all male.— Rachel
- i used to believe that all cats were female and all dogs were male— am i weird?