Wild Life by Opal Wei

They're walking on the wild side...
The Plan was simple: find a cure for the cancer that nearly took her sister's life. But for Zoey Fong, something about The Plan isn't working anymore. When a crucial tissue sample accidentally winds up in the hands of a very distracting-and disarmingly handsome-visitor, Zoey jumps at the chance to follow him home to retrieve it.
Davy Hsieh's rugged island estate is no manicured suburban park. His plan is simple: establish a legitimate animal sanctuary and embrace life as a hermit to make up for a sketchy past. Zoey invading his fortress of solitude should not, under any circumstances, be a romantic development.
And yet it's the single most invigorating week of their lives...when they're able to set their many differences aside and embrace it. Stranded amid all manner of flora and fauna-including a semidomesticated cougar called Baby-Davy and Zoey first have to survive the island. Then they'll need to take a leap of faith, maybe even trusting in each other, to save it.
"An absolutely charming opposites attract story that will have you swooning for Davy, feeling for Zoey, and swearing to stay away from geese." -Lily Chu, author of The Stand-In and The Comeback