The wallflower wager
(Book)

Series numeration from www.goodreads.com.

"Wealthy and ruthless, Gabriel Duke clawed his way from the lowliest slums to the pinnacle of high society -- and now he wants to get even. Loyal and passionate, Lady Penelope Campion never met a lost or wounded creature she wouldn't take into her home and her heart. When her imposing -- and attractive -- new neighbor demands she clear out the rescued animals, Penny sets him a challenge. She will part with her precious charges, if he can find them loving homes. Done, Gabriel says. How hard can it be to find homes for a few kittens? And a two-legged dog. And a foul-mouthed parrot. And a goat, an otter, a hedgehog ... Easier said than done, for a cold-blooded bastard who wouldn't know a loving home from a workhouse. Soon he's covered in cat hair, knee-deep in adorable, and bewitched by a shyly pretty spinster who defies his every attempt to resist. Now she's set her mind and heart on saving him. Not if he ruins her first."--Page 4 of cover