The Sentinels moose and squirrel

For Castiel everyone he had encountered was small. Though she may not have been a little tiny creature she still was not as massive as he was - his family was all large and statuesque, built for beasts even larger than their bodies. "It is welcoming." Castiel offered, knowing that to her things maybe have been trapped between two realms - it was strange to the Guardian the way that the pack seemed to defer to the whims of the child. He didn't know what was going on but Aria had seemed different almost once Deirdre had arrived. He couldn't hear what had been said between them, but he was suspicious in many ways. 

"There are many differences between the forest and the plains I am used to - not all of them unwelcome." The Guardian was lonely though, the truth of the matter was that he did not have the companionship and comradery that he was used to. With some luck and effort perhaps things would improve but he was uncertain.