People.com Lifestyle Pets Billie Eilish Celebrates Her Rescue Dog Shark's First Birthday: 'You Have Made My Life 1000x Better' The singer adopted Shark in April 2020 after first fostering him during the start of the coronavirus pandemic By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. She began at the brand in 2018 as an editorial intern and later returned as an intern on the Food team. Upon graduating from the University of Maryland in 2019, Georgia worked as an entertainment intern at USA Today before coming back to PEOPLE as a digital news writer. In April 2021, she began her role as a Parents writer/reporter. People Editorial Guidelines Published on February 10, 2021 10:43 AM Share Tweet Pin Email Photo: Billie Eilish Instagram; Kevin Mazur/AMA2019/Getty Images Billie Eilish is feeling thankful for her furry best friend as she celebrates his first birthday. On Tuesday, the "Ocean Eyes" singer paid tribute to her rescue dog Shark with a heartwarming post on Instagram. The 19-year-old shared a variety of adorable pictures and videos of Shark alongside a sweet message about how the rescue pup changed her life. "My sweet rescue baby boy was born a year ago today🥳🥳," Eilish began her caption. "You have made my life 1000x better happy birfday little shark🥰" In the post, Eilish included videos of Shark as he continued to grow over the past year. She featured clips of him running around and playing, as well as ones of him relaxing alongside the artist. Billie Eilish Instagram Eilish also celebrated her pooch with clips posted on her Instagram Story, writing "happy birthday sweet boy" alongside one video of Shark sleeping. Billie Eilish Adopts Puppy She Was Fostering While Social Distancing amid Coronavirus Pandemic Billie Eilish Instagram Billie Eilish Instagram Billie Eilish Instagram Billie Eilish Instagram Eilish also used her pooch's birthday as an opportunity to encourage others to foster or adopt animals during this time. "If you're thinking about fostering or adopting ... this is your sign," Eilish added in her post. Billie Eilish Gets a Sweet Visit from Shelter Puppies Before Kicking Off Her Tour in Miami The "Therefore I Am" singer adopted Shark back in April 2020 after fostering the dog during the pandemic. Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. "As for this little nameless monkey … you are miiiiiiiiiiiine!!!" the musician wrote on her Instagram Story atop a photo of the precious pup. Around the same time, Eilish also talked about the two puppies she was fostering on the German Telekom Electronic Beats podcast, saying that "more people" should foster. "They need it," she said of the animals. Eilish later revealed on her Instagram Story that the other puppy "also got a different forever home!! & is going to live the happiest life."