Ie, Aneurin. Y trydydd benill sy' 'da ti.

3rd verse as per Aneurin above:

The pig was given more food
Than his little tummy could hold
But now it's too (should be 'rhy' rather than 'rhi') late
The black pig is in the earth.

Although some v.3s have a different second couplet:

Ymhen 'chydig o funude
Roedd y mochyn yn mynd adre

(within a few minutes
The pig was 'going home' i.e. to his heavenly home)

sian