Fun & practical, provides fantastic mental stimulation for your pets, but can also be a great way to let your dog communicate with you. Simply record yourself using a word or phrase, up to twenty seconds long, & then whenever Fido presses the button with his paw it will play the message back. You can use the buttons to let your doggy tell you when it needs to go outside to the toilet, which can be a very handy thing for them to learn, or you could easily record a message like "love you mum", so your precious pooch can melt your heart with it's kind words. In a Canadian study of dog language they found that the lowest number of words a dog could learn was 15, the average was 89, & the cleverest of the pack could learn 215 words or phrases! Some great fun can be had with your dog...or clever kitty, & the whole family. Pack of four buttons Each button requires 2 x AAA batteries 3.5cm Tall x 9cm diameter