Is there a reason to light the candles in Animal Well? The short answer is yes, you should light all the candles you find in Animal Well in order to reach the 'true' ending of the game. The long answer is a bit more complicated and you likely won't discover the answer until way past when the credits roll.
To reach that point in Animal Well, you'll have to find the majority of the well hidden eggs throughout the labyrinthine map. Luckily, we painstakingly found and recorded all Animal Well egg locations that we recommend making use of once you can't find anymore. You'll also want to study up on how Animal Well fast travel works in order to get around a bit quicker.
RELATED LINKS:
Animal Well fast travel explained
How to rescue Animal Well cats
All Animal Well egg locations