How to create MyIsam table with a group auto_increment with Laravel migrations

Using Laravel Migrations, is there a way to create this an MyISAM table with a two-column primary key and an auto-increment in one of them?

CREATE TABLE animals (
    grp ENUM('fish','mammal','bird') NOT NULL,
    id MEDIUMINT NOT NULL AUTO_INCREMENT,
    name CHAR(30) NOT NULL,
    PRIMARY KEY (grp,id)
) ENGINE=MyISAM;

In this case the id AUTO_INCREMENT is done relative to the value of grp column. And you get something like this:

+--------+----+---------+
| grp    | id | name    |
+--------+----+---------+
| fish   |  1 | lax     |
| mammal |  1 | dog     |
| mammal |  2 | cat     |
| mammal |  3 | whale   |
| bird   |  1 | penguin |
| bird   |  2 | ostrich |
+--------+----+---------+

via Chebli Mohamed