what living creature (that walks) can live the longest?

Question: what living creature (that walks) can live the longest?
- Keywords:
  age,
  animal,
  life
Asked by to Anna, Elaine, Fiona, Kevin, Darren on 27 Jun 2014. This question was also asked by .
- Kevin O'Dell answered on 27 Jun 2014:
  
  I would imagine this must be Tortoises. The oldest tortoise on record was owned by the Tongan Royal family, and he lived to 188 years old. I can’t think of anything that would live longer that that.

Question: what living creature (that walks) can live the longest?