Rodent Kept as a Pet; It Runs on a Wheel
This page is the CodyCross answer for the clue below from Trip to Spain, Group 855, Puzzle 5 (San Sebastian).
Question is: Rodent Kept as a Pet; It Runs on a Wheel
and the answer is: HAMSTER
Word Meaning:
HAMSTER — Any of various Old World rodent species belonging to the subfamily Cricetinae.
Definitions from Wiktionary.