Warmth can be appreciated by anyone and any living creature. We all search for something to keep us warm and/or give us light at one time or another. Think about puppies and kittens or baby animals of any kind who pile on top of each other and burrow underneath one another just to be warm.
A candle as I showed in my day 1 picture can represent a sense of home but also radiate that sense of warmth that home gives. Home is hearth and fire as I said. And in this picture the candle is lit showing a fantastic sense of warmth and adding that to a sense of home and togetherness.