Jannik Sinner's girlfriend Laila Hasanovic recently laid bare her love for her pet dog Snoopy. In November, Snoopy accompanied Hasanovic to the final of the year-end ATP Finals in Turin, Italy, where Sinner defeated rival and reigning World No. 1 Carlos Alcaraz to win the prestigious title for the second straight year.On Thursday, December 11, Hasanovic, the Danish model and influencer who began dating Sinner earlier this year, took to her Instagram and shared an adorable video. It featured several precious moments she has spent with Snoopy and the in-video caption was a spin on the viral 'In your 20s' TikTok trend."In your 20s people will tell you it's too risky to rescue a dog. It's important you don't listen to them and get that dog," the in-video caption read.Meanwhile, the post itself was captioned:"Snoopy 🥹"Watch the video below: View this post on Instagram Instagram PostJannik Sinner's girlfriend Laila Hasanovic reportedly adopted Snoopy from a shelter in early 2024 and since then, the pet dog has become an integral part of the Danish model and influencer's life.Laila Hasanovic's pet dog Snoopy joined Dane's boyfriend Jannik Sinner's on-court title celebrations at ATP Finals 2025Carlos Alcaraz (left) & Jannik Sinner (right) pose with the men's singles runner-up and winner's trophies respectively at the 2025 ATP Finals (Source: Getty)Jannik Sinner won the men's singles ATP Finals for the first time in 2024 after defeating Taylor Fritz in the championship match. This year, the Italian qualified yet again for the prestigious year-end event, and once more, his performances were thoroughly impressive.Sinner secured progress to this year's final with Round Robin phase wins over Felix Auger-Aliassime, Alexander Zverev and Ben Shelton, and a semifinal victory against Alex de Minaur. These results saw the Italian square off against year-end No. 1 Carlos Alcaraz in the final.Registering a 7-6(4), 7-5 win over the Spaniard, Sinner defended his ATP Finals crown brilliantly, with none of his opponents able to take even a set off of him throughout the course of the tournament. After he was presented with the trophy, his girlfriend Laila Hasanovic and her pet dog Snoopy joined the Italian on the Inalpi Arena court to celebrate his latest title triumph.In the aftermath of the result, Sinner said:"I feel I am a better player than last year, I think this is the most important. It's all part of the process. I always say and believe that if you keep working and trying to be a better player, the results, they're going to come. This year it was like this."Jannik Sinner has already started his preparations for the 2026 tennis season, and was recently spotted hitting with former WTA No. 1 Simona Halep in Dubai.