When Rhaenyra talks with Ser Cole in the wood, her right leg change from straight to bent, several time between takes. (min. 29 approx)
A modern-day pug is seen at the party. Prior to the twentieth century, pugs had substantially longer snouts. However, this only goes for the real world. Apparently, in Westeros, dogs just looked like that.
In proposing Laenor Velaryon as a marriage match for Rhaenyra, Lord Strong says that Leanor is of "pure Valyrian blood." While Laenor's mother Rhaenys and father Corlys are both from Valyrian houses, his maternal grandmother is a Baratheon. It's also likely that other Westerosi houses married into the Targaryen and Valaryon lines along the way.