A dogs heart beats between 70 and 120 times a minute compared with a human heart which beats 70 to 80 times per minute.
The smartest dogs are said to be the border collie followed by the poodle and the golden retriever.
Dogs have about 100 different facial expressions, most of them made with the ears. Unfortunately, the likes of bulldogs and pitbulls only have ten due to their breeding. Therefore, these dogs easily get misinterpreted by other dogs and often get into fights.
Giving dogs chocolate could be fatal for them, because theobromine, an ingredient in chocolate, stimulates the central nervous system and cardiac muscle. About 1.1kg of milk chocolate or just 146g of cooking chocolate (which has more theobromine per gram) could kill a 22kg dog
A cat (230) has more bones than a human (206)
Cats eat grass to aid digestion and help them get rid of fur in their stomachs.
Cats have the largest eyes of any mammal relative to their body size
A guinea pig’s teeth constantly grow, so they need an appropriate chew toy to keep teeth properly worn down