It could be about friendship and protection. Big bear is there to protect little bear and they are friends. They do things together like exploring the forest or looking for food. Their relationship is central to the story.
The main characters are, of course, the big bear and the little bear.
I think the main idea could be about acceptance. The big smelly bear is different from other animals because of its smell. The story might be about how the other animals come to accept the bear despite its smell, or how the bear accepts itself.
The 'little bear big bear story' could be about their adventures in the forest. Maybe little bear is always learning from big bear, like how to find food or build a den. For example, one day big bear showed little bear where the best honey trees were. Little bear was so excited and tried to reach the honeycombs just like big bear did.
The Big Bear and Little Bear constellations are also known as Ursa Major and Ursa Minor. In the story, the Big Bear constellation is a large group of stars that resembles a big bear. It has a distinctive shape with a long 'tail' which is actually part of the constellation. The Little Bear constellation is smaller and also has a bear - like shape. Legend has it that these constellations were placed in the sky by the gods. They are important for navigation as well. Sailors in the old days used to find their way by looking at these constellations.
The main idea is about three bears - a papa bear, a mama bear, and a baby bear. They have a house and some things like porridge and beds. Then a little girl enters their house when they are not there and tries out their things.
I don't know the specific 'big bear's cake story', so I can't tell the main idea. But it might be about the bear's relationship with the cake, like possession or enjoyment.
The main idea is friendship. You and I befriend a little bear, which shows that different beings can get along and have a good time together.
The big bear is usually seen as a protector. It might be about how the big bear takes care of the little bear, like teaching it to find food. For example, they go to the river together and the big bear shows the little bear how to catch fish.
Well, generally in a 'big bear little bear story', it might be about the big bear taking care of the little bear. They could go on adventures in the forest, like looking for honey. The big bear would protect the little bear from any danger they might encounter during their exploration.
One special thing is their use in navigation. The Little Bear constellation has the North Star which is a key reference point for sailors. Another is their visibility. They are among the most easily recognizable constellations.