Movie 2.

Example of a feeding strike by a viperid snake. After initial bite, fangs are ‘walked’ further onto the prey, and injected venom squirts out of the gel before releasing gel. Feeding strike frames shown in Fig. 5. Vipera ammodytes (ID STV1447-0133) video 1A (90^° camera). Recorded at 1000 frames per second and played back at 30 frames per second (3% speed).