The Tasmanian Devil eats insects, mammals up to the size of a wombat, and carrion.
Tasmanian devils do not eat other live Tasmanian devils. They will, however, readily feed on the carcass of another Tasmanian devil that has died.
If there were stoat in Tasmania, which there are not, it is likely that the Tasmanian devil would eat them, if the opportunity arose. Tasmanian devils favour small mammals, but the stoat could possibly be too quick and fierce to be caught.
If the two species occupies the same continent, which they do not, then a tiger could very easily eat a Tasmanian devil. Currently, there are no opportunities for tigers to consume Tasmanian devils.
The Tasmanian devil has particularly strong jaws which are powerful enough tobute through bones.
No. Although both carnivorous mammals, this is where the similarity between Tasmanian devils and dingoes stops. Tasmanian devils are marsupials, with a pouch in which they rear their young. Dingoes are relative "newcomers" to Australia, and placental mammals.
The Tasmanian Devil is the largest carnivorous marsupial in Tasmania. Being at the top of the food chain, the Tasmanian devil has no native predators. Birds of prey are some danger to young Tasmanian Devils, but given that these creatures spend most of their time in dense bushland, there is little opportunity for hawks or kites to carry off young Tasmanian devils. Introduced foxes (an unfortunate recent addition to Tasmania) and feral dogs may have a go at younger Devils, but are not considered a major threat.
Possums in Tasmania eat young shoots, leaves, flowers, nectar and fruit of a variety of trees and shrubs. Some species also feed on insects.
There is no "co-animal" for the Tasmanian devil. It is a solitary species that does not interact with other species, except to hunt and eat them.
Any animal larger than a wallaby will not be attacked or hunted by a Tasmanian devil. However, there is no limit to the size of an animal it will eat if the animal is already dead, as the Tasmanian devil is a scavenger as well as a hunter.
The Tasmanian devil's only native competitor for food is the quol. However, the quoll is a much smaller dasyurid, and is certainly not a competitor for the carrion which Tasmanian devils eat. Foxes have been introduced fairly recently into Tasmania, and they, too, are competition for the Tasmanian devil.
Given that there are no badgers in Australia, the answer is "no". Badgers are also larger than Tasmanian devils, so if they did occupy he same country, there is a good chance a Tasmanian devil would avoid badgers. They would not, however, be averse to eating a dead badger, as Tasmanian devils feed on carrion, as well as hunt live prey.