Lucia and Lucas often like to wish me "Good Night" (in English).
Lucas told me "good night" several times, whispering it (because he was shy) as he was heading towards the stairs with Cristina.
Then he saw Gin, the cat, and said "Good night, Gin!"
Then he got to the first step of the stairs and stopped in his tracks before turning to Gin and saying "Buenas noches, Gin." And then explained that Gin doesn't know English.