The young female is the second kangaroo in as many days to suffer from human-induced cruelty, reported to the Queanbeyan-based animal rescue and rehabilitation group.

While a young male kangaroo found with an arrow in his shoulder on Tuesday survived the incident, a badly-injured young female, found at Mountain Creek Road, Captains Flat, on Thursday morning, had to be put down days after it escaped a snare with significant injury.

Wildcare communications co-ordinator Diane Hinton said it was likely the device was set specifically to trap kangaroos.

"She was hopping around for the last week or so with a rather nasty injury," she said.

"When I got to it, the wire had cut right through the body cavity.

"You could see inside, she was ripped apart."

Ms Hinton said she believed the animal's head and one shoulder got stuck and became entwined in the wire when it tried to pull free of the trap.

"The injury is as bad as anything I've ever seen," she said.

"It had cut through bone, cut through flesh, you could see into her abdominal cavity, and she had been fly-blown."

Ms Hinton said she expected the kangaroo would have stayed in close range of where the event took place after it escaped the device.

NSW RSPCA chief inspector David O'Shannessy said while the incident had not been reported to the organisation or police, the RSPCA would investigate any act of cruelty against animals.

He said anyone found guilty of cruelty to animals could face six months in prison, anyone convicted of aggravated animal cruelty could face a maximum of two years in jail and/or a $22,000 fine.

"Make no mistake, acts of cruelty against animals are taken seriously by the law," Mr O'Shannessy said.