ranivorous       
adjective  biology specialized uk/rəˈnɪv.ər.əs/ us/rəˈnɪv.ɚ.əs/
 (动物或鸟类)食蛙的
used to refer to animals or birds that eat frogs
  The ranivorous falcon is a native of the Cape of Good Hope. 食蛙隼是好望角本土的鸟类。 
 Ranivorous rodents include kangaroo rats and pocket mice.  食蛙的噬齿类动物包括袋鼠和小囊鼠。 
 - More examples
 - There are two stomachs as in ranivorous fowls.
 - In ranivorous birds, the contraction of the strong muscular gizzard affords a necessary aid to digestion.
 - I have not heard that any ranivorous propensities have been developed by the surrounding human population.