It depends on the nature of the animations and their commercial purpose.
If the animations are marketing materials for your existing business; promotional content used to advertise your goods or services; no additional class is required. The trademark covering your core business activity already covers the brand's use in that context.
If producing and distributing animations is itself a commercial service the business offers to clients, or if the animations constitute entertainment content offered to audiences, Class 41 (entertainment and cultural services) is relevant and should be added to the application.