Woke up this morning and took Oggie out, he started making this noise like he was hiccuping and then he basically started wretching like he was going to throw up. All that came out was strings of white foam. I know sometimes they get hunger pukes but when he's had that, it was yellow bile. This definitely wasn't that. He went to doggie daycare yesterday and didn't eat at all until last night, so he didn't have much food in general but he did eat before bed. He seems ok now but just wondering if anyone had any thoughts on what that was.