For the dog owner with everything, we now have cellphones for their pooch:

Hung off Fido's collar, the PetCell is a bone-shaped cell phone that will let dog owners talk to their best friend over a two-way speaker.

Developed by PetsMobility, the PetCell works with standard cellular networks and has its own number. It automatically answers when the owner punches in a code on their telephone keypad that means, "Lassie, come home!

At $300 or more, I'm not sure just how many they'll sell. Then again, I didn't think premium pet clothes would do well...