Minecraft world is crashing?

Okay, so I created a Minecraft world and I built heaps of thing. I have the Mo Creatures Mod, Too Many Items and some other things required to run those mods, so 6 mods in total. Everytime I open the world, it crashes and I think it has something to do with the kitty bed… I can post the crash report if needed.

Try disabling mods with forge and see if you can run it

Sometimes an item in a certain mod will be bugged and if you place that item it crashes the game. If there's something in that item that causes the game to crash then every time you open the world that same item will crash the game. The only way would be to uninstall the mod that includes the game crashing item then reinstall that mod however that means anything that was a part of that mod that you placed will be deleted.

I think your computer can't handle that much mod try reducing it