Dingo

From Wittypedia

An inflatable breed of dog that is used as a floatation device, usually on summer holidays by the seaside. Often's the time you will see a brow-beaten dad endlessly pumping away with a foot-pump to get enough air into Fido for him to keep little Timmy safe and dry as he paddles along the seafront - the grandparents watching from a distance reminiscing about the dingo they had as a child, a single tear rolling down grandpa's cheek as he recalls burying his in the back garden all those years ago.

Although happy to be of service, as all dog-type things are, the endless reinflations and 11 month per year abandonments in the corner of the shed quite naturally upset the dingos and leads to them stealing babies - which they sell to cosmetic labs for testing purposes. More often though they just go off and have a good moan to someone who cares or a good howl at the moon.