Maybe the human baby is a special child with some kind of unique ability. In the Ice Age setting, this ability could be related to communicating with animals. So the baby uses this power to bring different animal species together to form an alliance against a common threat, like a large flood or a group of extremely aggressive and territorial creatures.
One idea could be a story about a human from the Ice Age who discovers a hidden cave filled with ancient markings that lead to a secret power. Another could be a love story between two humans from different tribes during the Ice Age. Or perhaps a story of a human's journey to find a rare herb that can cure a deadly disease spreading in his tribe.
The plot might involve Roshan getting lost. His adoptive 'family' of animals then has to search for him. During this time, Roshan discovers new things about the ice age world on his own. He might come across a strange ice formation or a new type of animal that he's never seen before. When his friends find him, he has new knowledge to share with them.
Well, it could center around the baby Moeritherium being found by a group of early humans during the Ice Age. The humans, at first, are not sure what to do with it but then decide to protect it. As it grows, it forms a special bond with the humans, and together they face the challenges of the Ice Age, such as finding food and shelter in a world dominated by giant glaciers.
Well, perhaps in the fanfiction, baby gets lost and peaches sets out to find him. Along the way, peaches discovers more about the world outside her family's protection. She meets different characters who help or hinder her search for baby. In the end, when she finds baby, they both learn valuable lessons about courage and loyalty.
One idea could be that Diego and Shira are transformed into humans by some magical force in the Ice Age world. They then have to learn how to live as humans while still retaining some of their animal instincts. For example, they might be really good at hunting in the wild as humans because of their past as saber - toothed tigers.
For the human baby, you can give it distinct features like a curious nature. Maybe it has big, bright eyes that seem to hold a lot of wonder. For the animal characters, like the sloth Sid, you could make them have their own quirks. For example, a woolly rhino could be really clumsy but with a heart of gold, always accidentally causing a bit of chaos but meaning well when it comes to protecting the baby.
One possible plot idea could be that Shira discovers she's pregnant and she and her partner (maybe Diego) have to prepare for the new arrival. They might face challenges like finding a safe place in the ice - age world. Another idea could be that the other animals in the group initially don't know how to react but then come together to support her.
A great 'Ice Age Baby Dinos' fanfiction might involve a baby dino with a special ability, like being able to communicate with other species. In the Ice Age, this baby dino uses its power to unite different groups of animals against a common threat, such as a large and dangerous predator. It becomes a hero among the animals.
One interesting plot could be that Naruto and his friends are transported to the Ice Age world. There, they have to deal with the harsh environment and new, prehistoric creatures. Maybe Naruto tries to use his ninja skills to hunt for food or build shelters, but quickly realizes that his usual techniques need to be adapted to this new world. For example, his Rasengan might not be as effective against a woolly mammoth as it is against a human enemy.
Well, one possibility could be that the characters from Ice Age end up in the feudal Japan setting of Inuyasha. Sid could befriend Shippo, the fox demon. They might get into all sorts of comical situations together, like trying to find food in a world full of yokai. Manny, the mammoth, could be mistaken for a strange demon by some of the more superstitious villagers. And Diego might team up with Inuyasha to fight a common enemy, perhaps a powerful ice - based demon that threatens both their worlds.