[Kodak]

Kodak and Kamari were outside chasing each other and the next thing I know they were laying in the grass. I was standing on the patio with my mom and I called them to come in and only Kamari got up. Kodak rolled over then growled when my mom got close to him. I saw that he was biting on his leg and I walked over and he tried to get up. He then started limping and wouldn't put his foot down. I picked him up and he flitched a little when I touched it, he wasn't whining or anything but he wouldn't unbend it. When I put him on the floor, he limped and layed back down biting his paw. My mom held him while I felt his leg and then I tried to pull the hair back and looked between his paw pads. I can't find anything sticking him now my mom is calling around to see if there's any emergency animal hospital open. Please advise on how to make him more comfortable. I feel helpless not knowing what to do for him. He looks so sad and he lets me touch it but he won't unbend it. I took some pictures.