All he could hear were growls, yips and barks. Stupid mutts, He thought to himself, something stirred in him to see what the mutts were doing. Probably fighting amongst themselves for food, but he still went to see.
Anger filled him upon seeing what they were up too, "Get out of here, you dumb beasts." They turned to him growling, he growled back and they receded down the dank ally. In their wake was a small, nearly motionless lump, "poor little guy." He said walking up to it, it tried to hiss but all that came out was a weak meow of pain. As gently as he could he held the small kitten in his hands, it meowed again this time it hitched in the kitten's throat.
He ran a green finger along its ribs, surprisingly none of them felt broken. He stroked its face, the hitch happened again. A frown adorned the turtle's face, it wasn't going to make it no matter what he did. Donnie couldn't save it even if he made it back with the kitten alive. Mikey would just be sad, even if he understood why nothing could be done. He exhaled a deep breath, "it will be over soon little guy, then there will be no more pain." Exhaling again, he tighten his grip on the kitten's neck till there was a very sickening crack.
The light left the kitten's eyes, and tears dampened his mask. "I'm sorry little fella, all I could do was end your pain quicker." He whispered holding the lifeless cat, he headed to central park. He digging up a spot in the park he placed the cat in and buried it. "Hopeful your life is better now little guy," he said then he moved the man-hole cover and went home.
Sorry for the sad story, it was something I just had done. My dog had nearly killed a kitten and there was nothing I could do for it but end its suffering. Not sure if it is Leo or Raph, I believe that it could be either so you can read it as either one.