Second season of Dagashi Kashi.

The conflicting fates of human beings and wild animals are depicted in a naturalistic setting. The main character of the story is Fang, who was born to a hunting dog and a circus-runaway European wolf. Although Fang was raised by a human family, he is a wild animal after all, and is destined to live amongst nature. The story reaches its climax when Fang returns from the circus and faces his foe, a giant brown bear which killed his family. (Source: AnimeNfo)

Jun, his female companion, Remi, and her little brother, Chobi, are taken to the Cretaceous Period by a flying saucer. (Source: AniDB)

In the year 1999, a team of UN scientists in an attempt to tap into a new energy resource on a deserted island called Sansara, unknownigly open a portal to another universe, unleashing dormant biomechanical entities. Three years later, Takuya Goroza returns to the island of Sansara urged by a mysterious request by college chum Haruka Alford. Little does he know, his old friend isn't what he appears to be... (Source: ANN)