He doesn't want four legs to sit with.

Dancing was different.

Now, Vulcan, hold yourself straight, old fellow! There, doesn't the dress fit him nicely, at least when I turn up the sleeves over his paws and tie an apron round his body to make him a waist?
Dear old Nursey hasn't got much of a waist neither; now, has she, Turly?
Vulcan, Vulcan, let me tie your cap-strings!" Vulcan, who was more disturbed by his head-dress than by any other part of his costume, made a great effort to be patient while his shaggy ears were covered up in a forest of muslin frills.

At last he was completely dressed, and licked the end of Terry's little nose as she bent over him to put the finishing touches to her work.
"Now, it's all right except the spectacles.

Turly, Turly, look about for Nurse's spectacles.