The Tennessee horse impaled on a branch more than six weeks ago continues to make strides on his long road to recovery.
Amigo, an endurance horse, was given only a 2 per cent chance of survival following surgery to remove the branch, which had penetrated his chest and snapped two ribs.
He has fought a string of life-threatening conditions while being cared for at the Large Animal Clinic at the University of Tennessee, but has pulled through all of them.
He was nearly lost during surgery last week to clear an abscess, but again bounced back.
His recovery is now being monitored by more than 6000 fans on Facebook.
Owner Gary Sanderson, of Luttrell, said Amigo was looking good today and is spending time outside.
His improving appetite meant that his feeding tube had been removed.
"This was as good as I've seen him look since he's been at UT [the University of Tennessee].
"He's actually pulling at the hay net, eating all grain given him and tipping over the feed bowl for more!"
Amigo is alert and his vital signs are good.
Sanderson said Amigo's vet, Dr Nick Frank, was now guardedly optimistic about Amigo making a recovery.