A Puppy for Christmas: On the Secretary's Christmas List\The Soldier, the Puppy and Me\The Patter of Paws at Christmas (Harlequin Anthologies)

On the Secretary's Christmas List by Carole Mortimer 

Bree has landed an amazing job, but her new boss is a difficult, unreliable playboy—who is also infuriatingly gorgeous… When Bree looks after Jackson's son and energetic puppy, she realizes what she really wants  this Christmas…. 

The Soldier, the Puppy and Me by Myrna Mackenzie 

Christmas is a difficult time for war hero Trey McFadden and it doesn't help that his neighbour, Ella Delancey, and her adorable puppy, Fizz, seem determined on spreading festive cheer. 

The Patter of Paws at Christmas by Nikki Logan 

Ingrid has to spend Christmas with gorgeous zookeeper Gabriel Marque. They're keeping watch for the zoo's first litter of wild dogs. Will the patter of tiny paws bring them together, this time forever?