what helps a tiger to move in the dark

Dear student,
Please find below the answer:

Tigers can move in the dark and can detect the movement of prey because:

• They have more rods (responsible for night vision) than cones (responsible for colour vision) in their eyes. 
• They have a structure called tapetum lucidum behind the retina. It assists them in having better night vision. 
• They have large lenses and pupils.

​​​​​​Hope this clears your doubt.
Regards.