Try Lioden
It's a mature game (16+) so if you are under 16 you are out of luck, and trust me they DO find out. Theres events every month that such as floods, fires, droughts etc.
It's 100% free to play though you can buy 'GB' to get rare items or or bonuses, but you can play the game without them.
It's not animated but it's the only one that fits what you need right now besides kiddy games, you basically play as the lead male of a pride and fight for territory, breed cubs etc. You hunt your lionesses, lions age and die and when you 'die' you can choose another male to take over and play as them, you basically simulate life as a lion pride.
You also fight for territory, fight rival males, claim lionesses to expand your pride. You can also trade cubs and lionesses with other players, which is great to get rare markings and bases.
The game has so much detail to it, your lionesses even build nests before birthing their cubs (recently added) you actually see your lions grow and their pictures change with age, so cubs look like cubs, adolescents actually look like one instead of just a bigger cub, male adolescents have their mane starting to show...
Check it out.