This study investigated the effectiveness of various types of worked-out examples used in pre-training to optimize the cognitive load and enhance learners' comprehension of the content in an animation-based learning environment. An animation-based learning environment was developed specifically for this study. The participants were divided into four groups; each group was provided with a different type of WOE for pre-training: animation with narration; animation with concise narration; animation with narration and concise textual information; and animation with concise narration and verbal labels. After the pre-training phases, the participants' cognitive load was measured in three dimensions (intrinsic, extraneous, and germane cognitive loads), and their comprehension of the content was analyzed. Next, during the training phase, the participants were asked to carry out a complete task using animation accompanied by narration and concise textual information. After the training phase, the participants' cognitive load and comprehension of the content were analyzed again. The findings revealed that animation accompanied by concise narration and verbal labels was the most effective in controlling the cognitive load and enhancing the learning experience.