A dog can instinctively solve calculus problems when playing fetch.
In 1991 a girl was found in Ukraine who had lived with and been raised by dogs for most of her life.
Nazi scientists claimed to have trained a dog to call “Adolf Hitler” as “Mein Führer”.
There are more dogs in Paris than people.
Male French bulldogs are unable to mount females due to defects caused by inbreeding. In order to breed, female French bulldogs must be artificially inseminated.
Chocolate can kill dogs; it directly affects their heart and nervous system.
It is illegal to own a dog in Reykjavik.