Puppy farms or mills exploit dogs and inflict dreadful suffering on them in the process. There is no justification for buying from a puppy farm - it doesn't rescue dogs, it just lines the pockets of unscrupulous people. So how do you make sure you don't give your money to a puppy farmer? Dogs Trust has advice:

CHARITY WARNS PUBLIC IS BEING DUPED INTO BUYING ‘FARMED’ DOGS

Your dog can lose weight and have fun:

The Company of Animals’ Wins Award for Battling the Bulge in Dogs

Underlining The Company of Animals commitment to help battle the bulge in UK’s dogs its multi-award winning Tornado interactive dog ‘brain-teaser’ recently scooped another award as one of the “Top Pet Fitness and Weight Loss Products of 2009” by the Association for Pet Obesity in the USA. 

It's a slogan that is repeated each year, but sadly it needs repeating:

CANINE CHRISTMAS AT DOGS TRUST RODEN
A reminder that “A dog is for Life, Not just for Christmas®”
Thirty one years on from the birth of its famous slogan “A dog is for life, not just for Christmas®” Dogs Trust, which has 18 Rehoming Centres in the UK and Ireland, is bracing itself for another busy Christmas.