User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-6050823-20130906111718

Aruserutasu: 1 breakable part(Most likely claws)

Garara Ajara: 4 breakable parts

Zaboazagiru: 4 breakable parts

Gendrome and Iodrome: 1 breakable part(Most likely crest like  Velocidrome)

Nerusukyura: 3 breakable parts(Most likely crystal and chelicera)

Khezu: 2 breakable parts

Capcom just confirmed this.