Yes. Red kangaroos generally have just one joey at a time. However, it is not unusual for a female kangaroo to have two different aged joeys in her pouch at the same time. It is extremely unusual for a kangaroo to have more than one joey of the same age at any given time, but twins have been observed on rare occasions.
1 Inch
Tree kangaroos are just that - tree kangaroos. They give birth in the safety of the tree branches. Birth is not an ordeal for marsupials, as the young joeys are so tiny. All that is required is time and patience for the joey to make its way to the mother's pouch. The female tree kangaroo is more at risk from predators on the ground, so she will give birth in the trees.
Most human beings usually give birth to one baby at a time. However, other mammals like dogs give birth may give birth to at least six puppies at a time.
they spend their time with their mummies
Most human beings usually give birth to one baby at a time. However, other mammals like dogs give birth may give birth to at least six puppies at a time.
Quokkas tend to give birth to a single joey at a time.
Dolphins are like us they are mamals so one baby at a time
The usuall porcupine give birth to one or two "porcupettes" at a time.
Zebras usually give birth to one baby at a time. However, I don't think it would be impossible for them to give birth occasionally to twins.
Sheep and goat are 2 examples of farm animals that give birth to more than 1 baby at a time
Blue whales only give birth to one baby (calf) at a time.
The Kinkajou has usually only one cub at a time but sometimes they give birth to twins, but not often. They are a placental mammal.