Is the 4 Tails a Monkey

Son Gokū Seiten Taisei, the Yonbi (4-Tails) is a red-furred and green-skinned monkey, with a body-build of a gorilla.

What does the 7 tailed beast look like?

The Seven-Tails resembles a blue, armored kabutomushi, with six of its seven tails resembling green insect wings, along with the seventh tail, all growing from the end of its abdomen.

What does the 5 tails look like?

Kokuō primarily resembles a white horse, but with a dolphin’s head. It has two pointed long horns and three (two in the anime) shorter horns in front. The ends of its horns, hooves, and tails are tan, with some of the same-coloured spots before the tan areas of its horns and hooves.