Zoan

A Zoan type Devil Fruit is a kind of Devil Fruit that allows the user to transform into another species at will, or an inter-species hybrid. Zoan types are especially effective in close combat. The term was first used when Dalton's Devil Fruit was used to attack Wapol.

First Appearance‎: ‎Chapter 132; Episode 79

Japanese Name‎: ‎動物（ゾオン）系

Romanized Name‎: ‎Zōn-kei

There are two other category's for Devil Fruit, Logia and Paramecia.

Some Zoan types include

Ushi Ushi No Mi owned by Dalton

Inu Inu No Mi owned by Lassoo

Tori Tori No Mi owned by Pell

Mogu Mogu No Mi owned by Miss Merry Christmas (Drophy)

and those are just a few!