VIDEO: Cats communication woes revealed- Is your cat happy?
![A happy cat?](https://www.lincolnshireworld.com/webimg/legacy_ash_51798008.jpg?crop=3:2,smart&width=640&quality=65&enable=upscale)
![A happy cat?](/img/placeholder.png)
Feline blue and misunderstood? Spare a thought for cats whose owners can not tell when they are happy or sad.
According to a survey, two thirds of people are unaware that purring is a sign of pain as well as contentment.