Maintenance for the week of February 17:
• PC/Mac: No maintenance – February 17
• PC/Mac: NA and EU megaservers for maintenance – February 19, 4:00AM EST (9:00 UTC) - 12:00PM EST (17:00 UTC)
• Xbox: NA and EU megaservers for patch maintenance – February 19, 4:00AM EST (9:00 UTC) - 12:00PM EST (17:00 UTC)
• PlayStation®: NA and EU megaservers for patch maintenance – February 19, 4:00AM EST (9:00 UTC) - 12:00PM EST (17:00 UTC)
• ESO Store and Account System for maintenance – February 19, 4:00AM EST (9:00 UTC) - 12:00PM EST (17:00 UTC) https://forums.elderscrollsonline.com/en/discussion/673215
this is my pet, there are many like it but this one is mine.. I think he means sorc pets, which level up as you use them (ala the sorc minion summoning skill appropriate for that pet).
Yes, just for fun. Vanity pets are special in-game items either purchased or earned (like from participating in a beta stress test). They do not influence the game; they just follow you around, look cute, and make noise.
A note for those who Sneak. Your pet does not sneak. In beta more than a few players in PVP were "caught" while Sneaking because of the pet following them around.
Not sure if this is still true now that the game is Live, but keep it in mind.