Did I say something wrong? Why did he get so angry.

I try not to push it with him because if he's upset, he's upset and there's not much I can do to change it. So that's why I just left it alone, but His social media is all about our dogs, Josey and Rooster; they're his hunting dogs but treats them like our children, he's never posted a picture of us on Instagram, Facebook, nothing (we've been together a year and 3 months) and he had posted a picture of rooster again today so that's why I sent the first text just messing with him. Like I was seriously just joking about that part. Maybe you ladies can give me insight on why I may have pissed him off or if he's being irrational... I'm honestly so confused by his defensiveness all of sudden. Did I say something wrong? I'm not going to continue to ask him why he got mad because it'll just make things worse.

Update: Just to clarify because it seems like some of you guys think I'm upset about him not posting pictures of us on social media, that's not even what I'm talking about. I don't care about him not posting pictures of me and him on SM, I was just being silly with about that because his SM is all about our dogs, no one else makes appearances on his SM but our dogs. So I'm not butt hurt about that, he wasn't upset about that remark I made. I'm asking if I said anything wrong for him to just flip the script randomly when I brought up him being self conscious.

"We better" was about we better get some pictures! Because we're going out to a jazz concert and we'll be looking nice. I give him shit all the time about how he looks like one of those crazies who overly obsessed with his dogs on SM. He already knows that part was a joke.