Why when I get home from work does my dog bring me my shoes?

Res NON ipsa loquitur. 
Unless she’s confusing them with my slippers. 

She's at home with my wife all day, and apparently pays them no attention until I return, so whilst I very much appreciate your contribution, I'm not sold on it.

I'm going to leave my slippers downstairs in range of her today as an experiment Tilnet, on the proviso that if she chews them to pieces, you owe me a new pair. Fair?

And as I went home on Thursday night as drunk as drunk could be
I saw two boots beneath the bed where my old boots should be
Well, I called me wife and I said to her: Will you kindly tell to me
Who owns them boots beneath the bed where my old boots should be
 

Ah, you're drunk,
You're drunk you silly old fool,
Still you can not see
They're two lovely Geranium pots me mother sent to me
Well, it's many a day I've travelled a hundred miles or more
But laces in Geranium pots I never saw before