Dale Mayer 
Tucker [EPUB ebook] 

Tucker is always ready to fight for the underdog. So when he’s offered a mission to save the life of a dog unfairly judged and slated for termination, he can’t let her go down without a fight. Plus the dog is in Miami, where his sister lives, and … no way he can refuse to attend her upcoming wedding.
Addie knows her sister lied about being attacked by the dog, but Addie isn’t sure to what extent or how far her sister will go for revenge against an animal she hates. Yet Addie is determined to help the dog who she loves, even if no one else does. Finding a hero to champion her cause isn’t part of her plan, but she is quick to realize Tucker’s value when she meets him.
Now if only he didn’t have a nightmare scenario of his own … one that threatens to take them all down, including the dog.