By Ruth Zeimet
Geographic Range
Giant golden moles are found in the forests of the eastern Cape of South Africa. (Bronner, 2006a; Bronner, 2006b)
Habitat
This species seems to be restricted to large patches of coastal or Afromontane forests, although it is sometimes present in adjacent grasslands. These forests must have a deep litter layer, well developed undergrowth, and soft soils. Giant golden moles do not occur in rocky terrain or on steep slopes and are absent from the commercial forest plantations that have been established in the region. (Bronner, 2006a; Bronner, 2006b; Maddock and Hickman, 1985; Poduschka, 1980; Poduschka, 1982)
These animals are found in the following types of habitat:
temperate
; terrestrial
.
Terrestrial Biomes:
forest
.
Physical Description
(18.97 oz)
(7.87 in)
Most golden moles are usually about 12 to 17 cm long and weigh from 85 to 142 grams. Giant golden moles are about 20 cm in length and as heavy as 539 grams. Their fur is usually reddish brown, but is quite variable, ranging from black to pale yellow. The fur usually has an iridescent sheen of coppery gold, purple, green or bronze. Their bodies are fusiform, with large claws on their short, powerful forelegs. They have no external tail or ears, and their eyes are covered by skin. Their noses are pink and tapered. They have two layers of fur, an outer, moisture proof layer of guard hairs, and an insulating wooly underlayer. Their nose has a leather pad on it to protect the nostrils as they push through the soil. The first and fourth digits on their forelegs are vestigial, while the fifth digit has disappeared entirely. The third toe in front is greatly enlarged. They have five digits on their rear feet and they are webbed to shove the soil behind them as they dig. (Bronner, 2006a; Bronner, 2006b; Poduschka, 1982)
Some key physical features:
endothermic
; bilateral symmetry
.
Sexual dimorphism:
sexes alike.
Reproduction
Breeding intervals are not known for giant golden moles.
It is thought that giant golden moles breed throughout the year.
As part of a courtship ritual, males makes chirruping sounds at females while bobbing their heads and stomping their feet. In response to this, females make rasping and squealing noises. (Bronner, 2006a; Bronner, 2006b; Poduschka, 1982)
Mating systems:
polygynous
.
There is little available information on breeding behavior in giant golden moles. It is believed that they are polyestrous and breed throughout the year. In general, females raise one to two young per litter. (Bronner, 2006a; Bronner, 2006b)
Key reproductive features:
iteroparous
; year-round breeding
; gonochoric/gonochoristic/dioecious (sexes separate); sexual
; viviparous
.
Females nurse and care for their young until they are weaned. Little is known about the kinds of parental care provided before independence in giant golden moles. (Bronner, 2006a; Bronner, 2006b)
Parental investment:
altricial
; pre-fertilization (provisioning, protecting: female); pre-hatching/birth (provisioning: female, protecting: female); pre-weaning/fledging (provisioning: female).
Lifespan/Longevity
Information not known at this time.
Behavior
Giant golden moles are nocturnal. In the wild, they generally enter their burrows before dawn and emerge to forage well after dusk. While in their burrows they enter a state of torpor until evening. When in captivity, they require water to drink and eat an insect diet. If they are handled too much while they are in torpor, they will wake up and, in extreme cases, cease eating. Most species of golden moles do not need to drink free standing water because of their low metabolic rates and their diet. When they are awake, they stay moving almost constantly. When they sleep, their muscles twitch continuously. In the wild, giant golden moles inhabit burrows approximately 10 m long with a network of surface runways. Golden moles are generally solitary, and it is likely that giant golden moles are solitary as well. They are the only species that has shown any degree of social behavior, though, with several individuals being found together in the same burrow in midwinter, suggesting the possibility of social hibernation. Typically, adults are territorial and fight viciously if confined together. (Bronner, 1995; Bronner, 2006a; Bronner, 2006b; Maddock and Hickman, 1985; Poduschka, 1980; Poduschka, 1982)
Home Range
Information about home range sizes of giant golden moles is not available.
Communication and Perception
The eyes of golden moles are covered with a layer of skin. They likely use their senses of smell, touch, and hearing extensively in perceiving their environment and communicating. (Bronner, 2006a; Bronner, 2006b; Poduschka, 1982)
Perception channels:
tactile
; acoustic
; vibrations
; chemical
.
Food Habits
Giant golden moles are insectivores that feed mostly on earthworms, termites, and millipedes. They forage under litter on the forest floor. (Bronner, 2006a; Bronner, 2006b; Maddock and Hickman, 1985)
Primary Diet:
carnivore
(insectivore
, vermivore).
Animal Foods:
insects; terrestrial non-insect arthropods; terrestrial worms.
Predation
- domestic dogs (Canis lupus familiaris)
Domestic dogs have been reported preying on giant golden moles. Nocturnal snakes, owls, and mammalian carnivores are potential predators as well. Giant golden moles remain safe in burrows throughout the day, avoiding diurnal predators.
Anti-predator adaptations::
cryptic
.
Ecosystem Roles
Giant golden moles are important predators of earthworms and invertebrates in their forest ecosystems.
Economic Importance for Humans: Negative
There are no known adverse effects of giant golden moles on humans.
Economic Importance for Humans: Positive
Giant golden moles help to control insect pests that they prey on.
Ways that people benefit from these animals:
controls pest population.
Conservation Status
IUCN Red List: [link]:
Endangered.
US Federal List: [link]:
No special status.
CITES: [link]:
No special status.
Chrysospalax trevelyani populations face habitat loss from the degradation of forests due to clearing, firewood collection, stripping of trees, and the overgrazing of livestock. They are also preyed upon by domestic, feral dogs. (Bronner, 2006a; Bronner, 2006b)
For More Information
Find Chrysospalax trevelyani information at
Contributors
Tanya Dewey (editor), Animal Diversity Web, University of Michigan Museum of Zoology.
Ruth Zeimet (author), University of Wisconsin Stevens Point. Chris Yahnke (editor, instructor), University of Wisconsin Stevens Point.

