Sen. John McCainJohn Sidney McCainSenate's defense authorization would set cyber doctrine Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-Ariz.) introduced his new dog to Twitter on Friday.

He said the puppy is a Chesapeake Bay Retriever named Gilley.

Former Rep. Joe Walsh (R-Il.) said he supports McCain having a puppy.

Dylan Matthews of The Washington Post said it looked like McCain didn’t like his new puppy.