None the less he helped them construct the cats' home with enthusiasm.
For three strenuous days they persisted in their untiring effort.

So much sustained carpentering was hard on their hands; many small pieces were chipped out of them.

But their spirits never flagged; and by sunset on the third day they had constructed accommodation for thirty cats.

It may be that the wooden bars of the hutches were not all of the same breadth, but at any rate they were all of the same thickness: and it would be a slim cat, indeed, that would squirm through them.
At sunset on the third day the exultant trio gazed round the transformed cow-house with shining triumphant eyes; then Erebus said firmly: "What we want now is cats.".