A kitten who was very small for his age is now running around with two other cats, forming the cutest friendship. SchusterTails HighWhen Schuster the kitten arrived at Tails High, a volunteer-run rescue, he was half the size he should have been for his age.Over the following weeks, he showed little growth and was placed in the care of Ryen, an experienced fosterer. "He was always a happy boy with plenty of energy, but it was clear when he was transferred to me that something was off," Ryen told Love Meow.But Schuster never let his size stop him or dim his cheerful spirit. Tails High"He is the sweetest kitten you could possibly imagine. He just wants to cuddle, be held, and give kisses."After working closely with veterinarians, the team discovered that Schuster was born with hypothyroidism. "It's a rare condition in kittens where the thyroid gland doesn't produce enough hormone to regulate metabolism," Tails High shared. "This can lead to slower growth, lower energy, and sometimes a 'forever kitten' appearance." Tails HighAt three and a half months old, Schuster was only the size of an eight-week-old kitten. Even so, he refused to let his stature define him. "The good news is that with the right medication, these kittens can thrive and live full, happy lives."As Schuster began treatment, he found encouragement and companionship in other foster kittens. Simon Says, an orange tabby who cannot use his back legs, immediately took him under his wing. Simon and SchusterTails HighWhen Penguin, a black-and-white kitten, joined the group. Simon and Schuster eagerly greeted her at her pen. Penguin was a bit shy at first, but soon found comfort in the presence of her confident new friends.While Schuster and Simon can't quite reach the counters, "Penguin graciously steps in, scaling the counters to knock down the treat container so everyone can enjoy." Simon, Schuster, and PenguinTails HighSchuster is finally growing and catching up in weight, while his energy and playfulness have multiplied. "He has always had a zest for life, and he loves cuddling with me and his foster siblings," Ryen added.He may be the smallest of the trio, but what he lacks in size, he more than makes up for in personality and mischief. The three buddiesTails HighSchuster races through the house alongside his foster siblings, always searching for adventure. Together, they fill the space with endless antics and the pitter-patter of happy feet. Schuster proves that a small body can hold a mighty personality.With encouragement from Simon and Schuster, Penguin has learned to be brave around people. Tails High"The three kittens have formed the cutest relationship and absolutely love each other."Schuster needed a little extra time before he was big enough for his neuter surgery. When he came home from the vet, Simon greeted him with gentle sniffs and reassuring purrs. Soon, all three were curled up together in their fluffy bed, happy, warm, and content. Tails HighSchuster has never let anything stop him from living life to the fullest. He takes his medication like a champ, embraces each day with enthusiasm, and works his hardest to grow big and strong."He is proof that with attentive fosters, great vets, and lots of love, we figure it out, and maybe being low to the ground makes it easier to rise to the occasion." Tails HighThe kittens came from different beginnings, but thanks to a second chance, they are thriving together and ready for their next chapter: their happily ever after.They continue to lift each other's spirits and melt the hearts of everyone they meet. Tails HighShare this story with your friends. More on the trio (they are looking for homes) and Tails High (in the DC area) on Instagram @tailshigh and Facebook. Thanks to Ryen @mintwood.fosters.Related story: Kittens Go from Huddling in a Corner to Bouncing Around When They Live as Indoor Cats for the First Time