Appendix Growth And Development

Approximate age

Weight range

State of development

At birth

0.5 g

Hairless; mouth, front limbs and shoulders well developed; eyes and most other organs embryonic; sharp curved claws on front feet but hind limbs undeveloped; lips joined at outer edges.

1 month

5 g

Permanently attached to teat; ears still fused with the skin of the head; hind legs developing; outer edges of lips still joined together; still hairless.

3 months

100-110 g

Facial structures forming; ears fully unfolded but lying close to head; whiskers forming but otherwise still hairless; lips still joined.

3.5 months

230-250 g

Fine fur forming on ears; eyes may be open; still permanently attached to teat.

4 months

380-400 g

Eyes open; lips beginning to separate.

5 months

750-800 g

Fine layer of fur on dorsal side of limbs; no longer permanently attached to teat; lips fully separated; lower incisors erupting.

6 months

1-1.4 kg

Fine fur about one millimetre long over much of the body; skin of nose and soles of feet still pink; first molars visible, upper incisors erupting; head out of pouch occasionally.

7 months

2.2-2.5 kg

Fur thicker; premolars and second molars erupt; ventures out of pouch when in burrow.

8 months

2.7-3.4 kg

Fully furred but rudimentary tail still visible; muzzle still narrow and ears appear too large for head; out of pouch more often; nibbling grass while in pouch with head out, as well as when out beside mother.

9 months

10 months

3.6-5.2 kg 5-6.4 kg

Leaves pouch permanently; soles of feet darkening, also skin of nose; suckles from elongated teat; stays close to mother most of the time; eats more and more grass; probably eats mother's scats occasionally to establish bacterial colonies in its digestive system.

12 months 15 months

7.3-11.3 kg 12-19 kg

Weaned during this period; remains with mother for a variable time after weaning.

18 months

16.8 -24 kg

Usually independent.

Data for this table were obtained from measurements of bare-nosed wombats taken on 42 road kills, 17 hand-reared wombats, and from data given in Presidente (1982) and Mcllroy (1973). Data compiled by Taggart etal. (2007) for the southern hairy-nosed wombat is very similar to the above. The study of northern Tasmanian bare-nosed wombats by Green and Rainbird (1987) gives more detailed descriptions of growth and development.

Data for this table were obtained from measurements of bare-nosed wombats taken on 42 road kills, 17 hand-reared wombats, and from data given in Presidente (1982) and Mcllroy (1973). Data compiled by Taggart etal. (2007) for the southern hairy-nosed wombat is very similar to the above. The study of northern Tasmanian bare-nosed wombats by Green and Rainbird (1987) gives more detailed descriptions of growth and development.

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