Welcome to planDisney, Venera.
Keeping it short-and-sweet for your urgent question, the only complimentary 
theme park transportation from 
Disney's Animal Kingdom Theme Park to 
Magic Kindom Park is the bus. Buses run 45 minutes before a park opens and an hour after. The 
Walt Disney World Resort calendar for today shows Animal Kingdom Theme Park closes at 7 pm, so buses would run until 8 pm. If you were hoping to see 
Happily Ever After fireworks at 8 pm, Animal Kingdom Theme Park would be closed before you could get back to your car. 
I would recommend parking at the Ticket and Transportation Center near Magic Kingdom Park for your car to be near you at the end of the day. You can move your car from Animal Kingdom to the Magic Kingdom or any Disney theme park and not need to pay again - just show the Cast Member at the gate your parking receipt from earlier in the day. 
I hope you are able to enjoy all the magic on your trip! And please come back to 
planDisney with any other questions. 
Cheers!
Jana