How many baby Yellow-footed rock-wallabys are in a litter?
A Yellow-footed rock-wallaby (Petrogale xanthopus) usually gives birth to around 1 babies.
Each of those little ones spend around 33 days as a fetus before they are released into the wild. Upon birth, they weight 30 grams (0.07 lbs) and measure 9.2 cm (0′ 4″). They are a member of the Macropodidae family (genus: Petrogale). An adult Yellow-footed rock-wallaby grows up to a size of 100 cm (3′ 4″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The yellow-footed rock-wallaby (Petrogale xanthopus), formerly known as the ring-tailed wallaby, is a member of the macropod family (the marsupial family that includes the kangaroos, wallabies, tree-kangaroos, and wallaroos).
Other animals of the family Macropodidae
Yellow-footed rock-wallaby is a member of the Macropodidae, as are these animals:
- Banded hare-wallaby with 1 babies per pregnancy
- Red-legged pademelon with 1 babies per pregnancy
- Red kangaroo with 1 babies per pregnancy
- Black wallaroo with 1 babies per pregnancy
- Macleay’s dorcopsis with 1 babies per pregnancy
- Dingiso weighting around 9.4 kilograms (20.72 lbs)
- Parma wallaby with 1 babies per pregnancy
- Gray dorcopsis with 1 babies per pregnancy
- Matschie’s tree-kangaroo with 1 babies per pregnancy
- Lowlands tree-kangaroo with 1 babies per pregnancy
Animals that share a litter size with Yellow-footed rock-wallaby
Those animals also give birth to 1 babies at once:
- Red fruit bat
- Green ringtail possum
- Small flying fox
- Pacific white-sided dolphin
- Long-footed treeshrew
- Spectral bat
- Hirola
- Eastern lesser bamboo lemur
- Southwestern myotis
- Aders’s duiker
Animals that get as old as a Yellow-footed rock-wallaby
Other animals that usually reach the age of 12 years:
- Malagasy civet with 11 years
- Arabian gazelle with 11.25 years
- Black-flanked rock-wallaby with 12 years
- Markhor with 14 years
- Central American agouti with 10 years
- Masoala fork-marked lemur with 12 years
- Greater hedgehog tenrec with 10.5 years
- Hog badger with 13.92 years
- Sugar glider with 14 years
- Black giant squirrel with 10.08 years
Animals with the same weight as a Yellow-footed rock-wallaby
What other animals weight around 8.5 kg (18.74 lbs)?
- Silvery lutung usually reaching 7.15 kgs (15.76 lbs)
- Celebes crested macaque usually reaching 7.37 kgs (16.25 lbs)
- Southern pig-tailed macaque usually reaching 7.85 kgs (17.31 lbs)
- Aardwolf usually reaching 8.14 kgs (17.95 lbs)
- Black-footed gray langur usually reaching 10.03 kgs (22.11 lbs)
- East Javan langur usually reaching 9.72 kgs (21.43 lbs)
- Sulawesi bear cuscus usually reaching 10 kgs (22.05 lbs)
- Guatemalan black howler usually reaching 7.19 kgs (15.85 lbs)
- Doria’s tree-kangaroo usually reaching 8.98 kgs (19.8 lbs)
- Golden jackal usually reaching 9.67 kgs (21.32 lbs)