Your question isn't realy clear and somehow I can't get to the images you linked.
If I understand correctly you want to change something at the end of the level.
Probably you should make one or more global variables to do this.
You'll have to check if your level is completed in your event sheet. You probably have the events for that set up so I'll use some pseudo code.
On level one complete - set global variable "LevelsComplete" to 1
If global variable "LevelsComplete" is 1 set animals to whatever you want.