Sun bears are over half the size of sloth bears.
Only slightly. In most cases they are about the same size as the other.
Possibly the sloth bear. The sloth bear has more muscles and the same weight as a bengal tiger, while the bengal tiger is a stronger hunter than a sloth bear. With a couple of swipes from the sloth bear's claws, it could kill a bengal tiger. Sloth bears usually kill tigers for territory and safety kill sun bears.
No. A lion is not even bigger than a brown bear or a black bear.
yes they are.
Gaurs outweigh a polar bear (especially a boar) by about a half ton or more.
An Asiatic Black Bear has less fur than a sloth bear on its head and does not have any marks on its head. Sloth bears climb trees like sloths do, and sloth bears have claws like sloths do. Asiatic black bears are more aggressive and dangerous than sloth bears.
A blue whale is bigger than a polar bear.
A tiger would be larger and heavier than a sun bear, panda, and sloth bear. A siberian tiger is quite bigger than an asiatic black bear, and an american black bear in length and slightly by weight. Bengal tigers can be slightly bigger than an asiatic black bear or same, but they are smaller than american black bears by 100 pounds. Brown bears, grizzly bears, and polar bears will always be much larger and stronger than any tiger.
Define "bigger." Are you talking in terms of weight, or in terms of length or height?
It is possible.
Yes because of the more abundant resources in Kodiak Alaska the Kodiak bear is much larger than the inland brown bear. The Kodiak bear is the largest SUB-SPECIES of brown bear.
In most cases, the tiger would use its greater size, strength, and agility to kill the bear. However, sloth bears have been known to overwhelm young and/or inexperienced tigers.