Hi there, happy to hear you had.
There are definitely a few bugs :p
I've not gotten stuck near the blood before, but incase you didn't: the blood is a checkpoint so the dog will wait there until you and the dog are near it (and there no zombies to distract it) and then a voice line plays? Dog should move on from there.
Let us know if you've had another go!
Otherwise that's kinda weird, are you playing in browser or downloading?