Does a paladin's mount go back home?

[Axebeard]

A paladin gains the ability to call its mount to its side once per day at level 5. If the party makes camp and rests, does the paladin have to send the mount home, or can the mount stay with the paladin at the beginning of the next day, meaning the paladin starts with his/her mount and the ability to call it to his/her side once during the day as well?

[wraithstrike]

The rules don't dictate sending the animal away strangely enough. Most groups just allow it to stick around.