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Carrie Underwood's dog undergoes therapy, a tribute concert for Randy Travis is expanding and Keith Urban pays tribute to some music superstars who died in 2016.

FOX's Michelle Pollino with the details in "FOX Country":

I'm Michelle Pollino.

Carrie Underwood had a tragic family accident this Christmas, one of her two dogs was paralyzed just before the holidays with a herniated disc. The country star recently posted on Instagram a video of the dog in a physical therapy in a swimming pool walking with the help of a therapist writing on Instagram, "my little ace got his mobility back in his right side. His left side is slowly getting better, but we have a long way to go."

The Randy Travis tribute concert keeps growing: Travis Tritt, Kane Brown, Scotty McCreery, Joe Nichols, and the Bellamy Brothers have all joined the 1 night. 1 place. 1 time concert, set to take place on Feb. 8 at Nashville's Bridgestone Arena, it will also feature Alabama, Kenny Rogers, Rodney Atkins and more.

Keith Urban paid tribute to artists who died in 2016 with a medley during his New Year's Eve show in Nashville and the performance also included an onstage appearance by Urban's wife, actress Nicole Kidman.

That's FOX Country on FOX News.

Follow Michelle Pollino on Twitter: @MichelleFOXEnt