### Clue: Horny type getting hornier frolicking outside club with sailor (10)
### Answer: RHINOCEROS 
 ### Explanation: Definition: Horny type
 **Anagram of**(frolicking) HORNIER **containing**(outside) C(abbrev. for the suit of clubs in playing cards) **plus**(with) OS(abbrev. for "ordinary seaman";sailor).
Answer:  Some of which modern day species are in danger of extinction, like this prehistoric one: