Lusaka - A mother and baby pangolin rescued last week from poachers in western Zambia are doing well, a conservation group is reporting.The GRl-Wildlife Crime Prevention project says the two, rescued 10 days ago near the Kafue National Park, are "putting on weight"."Daily, their health is improving," the group said in an update on its Facebook page. GRI stands for Game Rangers International.Photos have been posted of the two cuddling and walking outside together, the baby perched on its mother's back in the characteristic pangolin pose. Three suspects were arrested, the group said in a post last week. It credited Zambia's Department of National Parks and Wildlife for the arrests.As in neighbouring Zimbabwe, there is growing concern - and efforts to halt - the poaching of pangolins, also known as scaly anteaters. Their scales are valued in Asian and traditional medicine. Pangolins are widely believed to be the world's most trafficked mammal.In November, Zambia's wildlife authority rescued six pangolins from poachers in one week alone.