Yuusanchi! from Yuu-hachi

Yuu-hachi's Dekai Hachi; Miseban no Spis; and Aa, Tanuki wa Mou Dame desu manga all adapted into an omnibus short anime. Dekai Hachi centers on a the titular character, a 40cm tall creature and his daily life alongside humans. Miseban no Spis centers on a mysterious fish that suddenly appears one day. Aa, Tanuki wa Mou Dame desu centers on a tanuki that is rented by various people. (Source: ANN, edited)