Toothless thinks Cesare is great fun and I'm sure he forgets all the indignities of chasing a stream of water just minutes after it happens. Prepare to be harassed endlessly.

He gets all kinds of weirded out when strange people climb into his saddle and start operating stuff so sorry, wee!Cesare. But if Hiccup were ever around to ride double then he would be happy to show off and then receive copious amounts of praise/food rewards.

Also the idea of Cesare mounted on a fire breathing dragon sort of scares me.