"Since when could he turn into a dog?" Erik looks genuinely flabbergasted, so much so that his lip curls back to show a hint of fang unintentionally.

Now, Erik would politely congratulate her for her upcoming wedding (no doubt the cake Max makes will be stunning) but that tone she's taking with him now makes him feel less like being polite.

"I'm sure you know exactly what it is. Let's not beat around the bush here, darling." His grip on her arm is suddenly much firmer. "I am his master. And you very clearly have an issue with that."