Lots of good advice here.
All dogs can be trained, age is really not an issue, but patience is the big issue.
Older dogs have to unlearn so it may take more patients and persistence. Also fosters might have some abuse issues that come into play.
Good luck!
__________________ .  Cali  , and Cali's keeper and staff, Jay No, not a "mini" Yorkie - She loves to motor in her Mini Cooper car |