They rescued two kittens from an animal shelter and quickly realized just how much the young cats needed each other. Frankie @frankies_fostersFrankie, a volunteer with Best Friends Animal Society, received a call asking if she could take in two kittens rescued from a city shelter. She didn't hesitate to say yes.She welcomed her first foster kittens of the year and set up a cozy playpen for them. At just four weeks old, the feline sisters were underweight and needed dedicated care to help them grow. "They were just at weaning age when they arrived and were still learning how to eat on their own. The first week was messy and sweet in equal measure," Frankie told Love Meow.One thing stood out right away: the kittens clung to each other for everything. Frankie @frankies_fostersPoppy (the calico) and Panther (the black kitten) seemed more interested in playing in their food than actually eating it, keeping their foster mom on her toes. "I supplemented with syringe feedings for a few days to ensure they were getting enough nutrition."After each meal, Frankie cleaned them up and gently wrapped them in a soft towel. Instantly, the kittens relaxed, purring in unison as they drifted off to sleep. Frankie @frankies_fostersFrankie adjusted their diet until she found what worked best for their delicate tummies. With proper care and support from the medical team, the kittens began to turn a corner. "After a couple of weeks, they were steadily gaining weight. They became energetic, playful, and curious. And that's when I knew they were going to be okay."From the very beginning, their bond was unmistakable. Frankie @frankies_fostersLike two peas in a pod, Poppy and Panther did everything together. Whether it was mealtime, playtime, or nap time, the sisters moved through the day side by side. They groomed each other, leaned into one another for comfort, and seemed happiest when they were touching.Often, they could be found curled into a tiny cuddle puddle, fast asleep in each other's arms. Frankie @frankies_fosters"Panther always seems to stay on watch for her sister, Poppy. She leans into her, waits until she knows she is asleep, and only then lets herself drift off too."Frankie often walked into the room to find the kittens wrapped around each other. The moment they noticed their foster mom, they burst into a chorus of happy purrs and squeaks. Frankie @frankies_fosters"Some of their favorite things included dramatic wrestling matches that would seamlessly turn into grooming sessions, climbing their playpen as they grew more adventurous, and of course, cuddling," Frankie shared."They both loved to be close, whether that meant snuggling each other or climbing into my lap." Frankie @frankies_fostersPanther wasn't feeling her best when she first arrived, but once she recovered and regained her strength, her true personality blossomed.She became a feisty bundle of energy who loved exploring, climbing, and zooming around the room, though nothing made her happier than being with her sister. Poppy, on the other hand, was a constant purr machine with the adorable habit of meowing herself to sleep. "She always insists on sleeping on or right beside Panther." Frankie @frankies_fosters"It quickly became clear that they needed to be adopted as a pair, and thankfully, many potential adopters felt the same way."One family came across the duo and instantly fell in love with their charming personalities. Seeing the deep bond they shared, the family knew right away that the kittens couldn't be separated. A week after Valentine's day, Poppy and Panther headed off to their forever home, together. Frankie @frankies_fostersAfter thoroughly investigating their new home, the two curled up together in a cozy pile, filling the space with a symphony of purrs."Today, Panther and Poppy, now Boo and Barry, are part of a large, loving family who absolutely adore and spoil them. Watching them leave together for their forever home was the best possible ending." Frankie @frankies_fostersShare this story with your friends. More on Frankie's fosters on Instagram @frankies_fosters and Best Friends Animal Society in LA @bfas_la.Related story: Cat Came to Shelter with 7 Kittens, Months Later She's Offering Same Love She Received to Everyone She Meets