I've just started using maya (Persenal learning edition) And I wanted to make that cartoon dog Kurt shows in the turtorial, But when I get to the third part (where I have to make it to one peace of geometry) I get a problem.

At the start of the third part you have to set the neck and the head together, I clicked on the neck and hold down shift and press the head go to Polygons > Booleans > Union, that works fine. But when I try to conect the head+neck to the body it just disapear.

Anyone knows what Im doin wrong?