Chii Is Shown Gratitude.
The pet store lady comes to visit Chi and brings her some pet clothes. When Chi runs away from the pet store lady's dress-up session, Chi finds Youhei with Mrs. Yamada, playing with Mayu and Ryu. When the pet store lady finds her, there's a surprise.
Aired 26/08/2009EP 87 - Chii Is Shown Gratitude.

2009
Chi's Sweet Home - Chi's New Address
Chi is still living with the Yamada family, but they decide it isn't fair to force her to hide indoors in their "no pets allowed" apartment. So they decide there is only one thing to be done, Chi must move away for her own happiness.