IT'S RAINING CATS AND DOGS...AND BABIES?  When charismatic K-9 cop Alex Santiago shows up at Paradise Animal Clinic with a tiny gray kitten in his jacket, something inside Dr. Cassie Marshall shifts. The overworked single mom and veterinarian had been sure her plate was already full. Yet something about Alex's coffee-brown eyes has made her reconsider. Surely she can make room in her heart for just one more.  But two? When Cassie learns she is pregnant after a hot night with Alex, she panics. How can she handle one man, his dog, her little girl, their cat and a baby? Her sexy deputy sheriff has made no bones about wanting a simple relationship. So how can she tell her love-shy Valentine that their already full menagerie is about to be visited by the stork?