Happy staffy chappy seen by Chin on the Bakerloo Line, London Underground.
Alert and focused, this guy takes tube travelling seriously. Seen by @jdcasasbuenas on the Victoria Line, London Underground.
Looking a little sheepish. Pooch seen by @TheVintageCake at Lewisham Station.
One sleepy passenger. Border terrier with @JinnyNguiDesign heading home from Frinton-on-Sea.
Looking less than impressed. @SiteDog with @TheDigVenturers from Glasgow to London Euston.
Little chap reading the paper. Obviously. Jack Russell seen by RMorgan on the Jubilee Line, London Underground.
Molly gets her own seat with aliceev123 heading to Bristol.
Good boy. Reggie the labrador with @jobsaTim on South West Trains to Twickenham.
Overhead pooch view. Seen by yeomanator on the London Underground, via @smprsn
Off duty guide dog Crystal seen by @London_Geek_81
Slovakian Rough Haired Pointer Porthos, handsome chap. With @cruellamcg on the Thames Link.
Gorgeous George! English Bulldog puppy with @MaeveBayles and @chefchristophe1 heading to London Waterloo
Double trouble. Rufus and Heidi with @PetsPyjamas heading to Shoreditch.
A little lassie. @ohmyaaa spots a shetland sheepdog amongst feet on the Victoria Line, London Underground.