Pigs have horse health and a different way of getting off them

Is this a bug? When i ride a pig, it says press LSHIFT to dismount... it also displays horse health

EDIT: This goes for all rideable entities i.e. Minecarts, Boats. The only different thing is that instead of right-clicking to dismount, it says press LSHIFT to dismount.(yes i know this feature is for horses only)