The 34-year-old, who recently split from actress Nina Dobrev, introduced his new love on Instagram Monday, reports people.com.
He also explained how she unexpectedly came into his life.
"Rescued from traffic near the 'Vampire Diaries' stages just a few hours ago," he posted with a picture of the dog, describing her as "smart, beautiful and charming - all a man could ask for in a girl."
Spotted: Kriti Sanon at spa in Juhu
'Look' how the Sheena Bora case has taken a toll on Indrani Mukerjea
Photos: Katrina Kaif, Parineeti Chopra, Shilpa Shetty's movie outing in Juhu
Birthday special: 14 Bollywood actors who made it big on TV
Photos: Vaani Kapoor, Poonam Pandey, Sana Khan at fashion event