Fur, Fangs, and Felines3 books in series
Trouble Comes in Threes Publisher's Summary
A snowstorm in the South - on New Year's Eve - is a perfect recipe for a catastrophe. After two soul-crushing bad breaks, Kirk's waiting for disaster number three to strike when, naturally, two stray cats arrive on his doorstep during the storm and decide to make themselves at home. Tenderhearted Kirk lets them stay, even though there's something decidedly odd about his overly friendly felines.
Out of the punishing weather and full of tuna, Dolf and Tal are happy to be snug in Kirk's house. But then their human goes outside for firewood and suffers a nasty fall that leaves him unconscious. Now the two cats have no choice but to reveal themselves.
Kirk wakes up to find the two kitties are actually Dolf and Tal. They're cat shifters - and his destined mates. Being part of a feline threesome is enough for Kirk to grapple with, but soon he learns they come from a clowder that doesn't believe humans and shifters should mix. Kirk knew those two cats would be trouble. Little does he know the real trouble lies ahead.