None. Just very mild flirting between a wolf and a fox in episode 4.

In episode 2, a wolf simply puts some very small dwarf children into a bag, takes them into a hut and locks them there. No "real" violence.

In episode 3, a wolf is caught in net.

None.

In episode 2, a wolf is briefly seen smoking a cigar.

None. This 4-part animation series is suitable for children.