Dogs have set some incredible records. From the biggest dog in the world and a skateboarding bulldog to the chihuahuas which hold various small dog records and those with record-breaking tongues and ears, breeds of all shapes and sizes have entered the record books for various skills and attributes.

More amazing animals
Keon the Irish Wolfhound has the longest tail on a dog at 76.8 cm
Longest tail on a dog
Otto has held the record for the longest human tunnel traveled through by a skateboarding dog
Otto the skateboarding bulldog
Guide Dogs for the Blind Association had taught an incredible 33,910 graduates by 31 December 2016, earning them a title for the most guide dogs trained by an organisation and a place
How to train a guide dog
When the biggest dog in the world Gibson met the shortest dog, Boo Boo
Tallest and shortest dogs meet (former record holders)
Mochi possesses the longest tongue on a dog at 18.58 cm (7.3 in)
Longest tongue