י"ד He said to him, "Why can the dog recognize his owner but the cat does not?" He said to him, "Anyone who eats from something that a mouse has eaten from forgets his studies (Horayot 13a), so a cat who eats the mouse itself, how much more so should it be unable to recognize its owner!"
Why Dogs Know Their Owners but Cats Do Not
Alphabet of Ben Sira 40