Cat psychology is a hobby of mine; the consensus seems to be that cats consider humans to be really useless at important things like hunting, so they take it upon themselves to teach you how to do it by bringing you prey that is progressively 'less dead', and inviting you to kill it. This is how kittens are taught to hunt, and says a lot about how cats regard their 'owners'. Personally, I tend to agree with the statement that says 'dogs have owners; cats have staff'!
Tim (who has three cats, and a dog who knows his place.)