Lately, I've been; I've been losing sleep...
"Cas!"
Sam's voice was hoarse from barking which worsened his fraying sanity. He howled in anguish and began to break into a gallop.
On the blood-stained floor, lying on his side, was a black and white border collie. His fur, which would usually be billowing out in creamy tendrils of white and black now lay matted and dirty as if he had taken a ride in a garbage truck. It didn't help that he had just participated in a blood feud.
The over-sized Leonberger had gone mad with worry, and he raised a brown-padded paw to poke at the lifeless canine, before a wheezy noise was hurriedly forced out of the weak thing.
"Sam. I am alright"
The larger dog's muzzle trembled into a relieved smile and the long mass of fur behind his rear began wagging in gleeful sweeps.
Panting heavily, Castiel braced his weight against his forelegs as he made a wobbly attempt to stand up; successfully, but movement ate at his strength. Glancing awkwardly down at the ground, his head craned in an unnatural position, he hobbled towards the Leonberger like a furred rag balancing on pegs.
Delving his snout into Sam's hazel-streaked fur, he remembered Dean and his condition just before the three had passed out from the blood-induced possession.
"Where is Dean!"
The Border collie attempted to move a little too quickly and he began walking in jarring movements; his blood-combed paws thudding down on the floor in disproportionate places.
Sam's hope deflated and he hurriedly maneuvered himself under Castiel's belly to prevent him from collapsing.
"Whoa, whoa, easy there Cas- we'll find my brother- but you need to take it a bit slower"
Such rapid movement had drained Castiel's ability to move again and he slumped sadly across a bed of Sam's fur, his eyes glazing over and becoming stolid.
"You don't understand...Dean...I-I need-you..."
"Cas" A cracked whisper escaped Sam's throat.
"Hang in there."