Calling for cats and dogs ..
This is an experimental app, so please don't give negative feedback if your pet won't react as expected.
Some cats react to dry food, while others react to triangle's sound and some need to see the real package; unfortunately cheating a cat is not that easy.
Should your cat react to these calls, remember to prize your pet also with real food to guarantee long term functionality.
Whistles are used by professional trainers for dog's training.
The frequencies of these whistles are the same of normal toy whistles; remember that small dogs react to higher frequencies than big dogs
Dogs hear these sounds at a level which is three times louder than humans, so don't worry if you can't hear some of these sounds.