imo, you should just avoid using animations for mobile devices. Apart from the tricky animation situations, there's also a risk of a choppy experience as phones are not as well equipped to handle graphic intensive tasks as.. say, a desktop system.
This though, is changing. Phones are becoming fast and snappy literally every day so it's not actually a bad idea to deliver a rich experience to your mobile users.
Val Head has written a really amazing guide on handling responsive animations which you can follow: 24ways.org/2015/animation-in-responsive-design/
Hope it helps! 😊