Little chap reading the paper. Obviously. Jack Russell seen by RMorgan on the Jubilee Line, London Underground.
Good boy. Reggie the labrador with @jobsaTim on South West Trains to Twickenham.
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.
Utter devotion. One man and his wee dog seen by @KatyaFord on the District Line, London Underground.
Possible lion spotted by @theJeremyVine on a First Great Western train from Reading.
Chow chow! Meko with @TraceyPegrum on the Hertford East train.
Happy Max. Boxer/Staffie seen by @SinisterMC on a First Capital Connect train.