Old Dog. New Trick?

Whenever we go on a trip, we always get Flem a squeaky toy.

On our return, he loves to search our luggage for his present.

When he was younger, he'd squeak his new toy all night, keeping us awake till we yell at him.

A couple of nights ago, on our return from a short trip, this old dog enthusiastically searched our luggage as usual, found his toy, and ...

... promptly fell asleep.   (That multi-coloured thing in the bottom right is the toy.)