All mammals have feeding nipples , different numbers from 2 to 12 or so. The young suck on these and get a thick milky substance called colostrum for nourishment.
All mammals suckle their young. That is one of the defining characteristics that makes them mammals. Even egg-laying mammals (monotremes which include the platypus and echidna) suckle their young.
Yes. Kangaroos are marsupials, which are a sub-group of mammals. All mammals suckle their young.
All mammals suckle their young ones.
Horses like nearly all mammals suckle their young.
Like all mammals, leopards have live young and suckle them.
Yes all mammals suckle their young with milk.
Yes all mammals suckle their young.
The only animals that suckle are mammals, but not all mammals give live birth (the monotremes do not). So the answer to your question is "non-monotreme mammals," but there is no common official term for them.
No. Most reptiles don't care for their young, with the exceptions of crocodiles and other members of that family. When a mother lizard lays her eggs, she will watch them until they hatch. When they hatch, the mother lizard will leave, leaving the babies to fend for themselves.
Penguins are not mammals. They do not have fur, nor do they suckle their young - nurse their babies with milk. Penguins are flightless birds. They have feathers.
Yes. All baby mammals suckle. Because tigers are mammals, tiger cubs do suckle.
Like all mammals, platypus young feed on mothers' milk. The platypus and echidna are both egg-laying mammals, but they are still classified as mammals because the young suckle from the mother.