[Okay, wait a second. Either the people in this 'England' place were incredibly stupid and thought dragons and cows looked even remotely similar, or Hiccup was talking to a dragon. And the latter was seeming way more likely and giving him some context for Temeraire's body language.]
...You're way better at talking than Toothless was while he was here.
[video]
...You're way better at talking than Toothless was while he was here.