Dog logic

We have a dog, a breed of bird-brabanson, from the Griffon family for the second year. They are rarely seen here, for those who haven't seen it - it's a hybrid of mops with grimlin from the film of the same name, the size of a small cat. Dogs are so ugly that it already borders with true beauty. You look at her and sometimes think, “How terrible! She and in her genealogy still from the breeders left the name "May Preshes", and at home she is just Martha.
But despite the appearance, the dog is very kind, confident and human-loving. You can’t bite, but you can bite to death. In the evening you come from work, she is already jumping at the door, until she jumps on her arms and even once does not slip, does not calm down.
In addition to her, we also have a cat, a large, Scottish. On January 1, she gave birth to three cats. The cats were also large, we did not want to give, so they lived at our house for almost three months. Every evening, they all ran together to meet, first Martha, followed by the cats. Unfortunately, it was time to give them back. Three days in a row I came from work in the evening, new owners immediately came in and picked up the cat. When I got the last one, it was very sad.
The next day I come in the evening from work, I open the door – no one runs to meet. There are no more cats. Stop to! Where is Marta? Why does she not meet? No one was running, only the cat looked out of the room.
I walk into the room, there is nowhere. And suddenly I see – Marta sits under the couch and frightened from there with her round eyes. She clearly made a logical conclusion with her brains the size of a walnuts – one cat disappeared every night. Yesterday the cats ended, so the next one in turn - she, the cat, is already old, adult.
How did she know that she was “May Precious”?

Mother of Siberia (c)