six
o’clock
asked the Doctor . `` We always know , '' answered the rat . `` The tips of our tails get that tingly feeling -- like when your foot 's asleep . This morning , at six o'clock , while I was getting breakfast , my tail suddenly began to tingle . At first I thought it was my rheumatism coming back . So I went and asked my aunt how she felt -- you remember her ? -- the long , piebald rat , rather skinny , who came to see you in Puddleby last Spring with jaundice ?