Distressing photos show how a dead Staffie was found shoved in a rucksack with its paws tied together with cables.
The dog was discovered wrapped in a child’s duvet and gaffe tape – deliberately placed deep in undergrowth in woods.
He had bruising inside his mouth but it was not clear how he died, the RSPCA said.
The animal welfare organisation has launched an investigation following the gruesome discovery by a tree surgeon near Dibden Purlieu, Hampshire, on the edge of the New Forest.
RSCPA inspector Penny Baker said: ‘He was found in a large, brand new zipped-up rucksack.