He had a sticker on his shirt, it said:
Hi, my name is: Elias
Cas: Are you...Elias?
Tablet siri: "Yes."
Cas: Oh...can you talk?
"I...yes...talkie.."
Cas: Cool...uh-well-hey, Elias...Sorry about hitting you...
Elias giggled and played more barking
Cas: Huh...
He thinks for a second
Cas: Do you...like dogs?
"yez...dog.."
Cas: ...
He morphs into a dog