His full arm extension almost looked like a barely fingertip grab.

他的手臂完全伸展，看起来几乎就像指尖抓住一样。

If he's quadrupedal, you want to make sure that what is absolute here from his performance is his two feet and the markers on the end of the arm extension.

如果他是四足动物，您要确保他的表演绝对是他的两只脚和手臂伸展末端的标记。