Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Short-eared Dog (Small-eared Zorro) - Atelocynus microtis
Short-eared Dog (Small-eared Zorro) - Atelocynus microtis

[Image: Small-eared-zorro-photographed-on-camera-trap.jpg]

Scientific classification 
Kingdom: Animalia 
Phylum: Chordata 
Class: Mammalia 
Order: Carnivora 
Family: Canidae 
Genus: Atelocynus 
Species: Atelocynus microtis

Geographic Range
Atelocynus microtis can be found in northern South America east of the Andes in Colombia, Ecuador, and Peru, as well as south of the Amazon in Brazil. 

[Image: smallearedzorro_range.gif]

The short, thick coat of A. microtis suggests that the animal is often in water or resides in areas of heavy rainfall. Furthermore, its short legs are well adapted for locomotion in dense forests. These conclusions are supported by this animals' distribution--all specimens have been collected in lowland tropical rainforests. Berta (1986)

[Image: photo.jpg]

Physical Description
6.50 to 9 kg
(14.3 to 19.8 lbs)

[Image: Small-eared-zorro-walking.jpg]

Atelocynus microtis has a large head, relatively short and slender limbs, and a long bushy tail. The ears are proportionately shorter than in most other species of wild dogs, but protrude well above the crown. The tips of the canines are visible when the mouth is closed. Atelocynus microtis has short and stiff pelage which is brown or blackish, giving way to a dull reddish-brown on the underside. Other markings include a dark band along the top of the back and tail, and a light-colored patch at the underside of the base of the tail. 


There is no published information regarding reproduction in this species. Berta (1986) ; Emmons (1990)

[Image: Small-eared-zorro-with-radio-collar-atta...fforts.jpg]


Nothing is known of the behavior of A. microtis in the wild. Observations of this species have been made in captivity. These animals were shy during the early part of captivity but became tame with time. To manifest hostility, they growled, snarled, bared their teeth, and attempted to bite. The males have been seen to assert dominance in most situations, although the females are one-third larger. The tip of the tail of this animal is particulary sensitive and, when the animal is excited, the hairs are erected. Furthermore, when males are excited, they emit a strong musky odor. Observations of the small-eared dog in captivity show that it moves gracefully and lightly, uncharacteristic of other members of the family.)

[Image: Small-eared-zorro-walking-in-habitat-cam...-image.jpg]

Food Habits

Nothing is known about the food habits of of A. microtis in the wild. Observations of this species in captivity suggest a carnivorous diet, although it has been suggested that it will eat fruit in wild if prey is scarce.
[Image: wildcat10-CougarHuntingDeer.jpg]
[-] The following 1 user Likes Taipan's post:
  • Claudiu Constantin Nicolaescu
Red Dog Wrote:
Quote:From Babsa: The dental formula is 3/3-1/1-4/4-2/3=42. The lower incisor is short and not caniniform. The upper canines are distinctively long, their tips projecting outside the closed mouth for about 50mm.
Thinking more on this measurement, i would have to say that it must be a typo. Either the author meant that the canines themselves were 5 cm long, or that they extended outside of the mouth 5 mm - i dont know. Another site claims that the canines extend 6.4 mm outside the closed mouth, but again, it does not actually mention the length of the entire canine.


I think I have a reasonable estimate for the upper canine length based on the scaling the canines in the image below:

The scale is 2.15 cm = 5 cm in real life Since the canines measure 1 cm, in real life they should be 2.33 cm [5 *(1/2.15)]. This is longer than a dhole, western coyote and most eastern coyotes. It is also as large as the eurasian lynx and twice as large as the jagurundi in the chart of canine lengths I posted earlier in the thread.

[Image: Short-eareddogcaninesize.jpg][/quote]
[Image: wildcat10-CougarHuntingDeer.jpg]
[-] The following 1 user Likes Taipan's post:
  • Claudiu Constantin Nicolaescu
Notable record of the Short-eared Dog Atelocynus microtis (Carnivora: Canidae) in the Amazonian trapeze, Colombia.

Atelocynus microtis is one of the least known species of carnivores in the world, known only from sporadic records throughout its distribution (Michalski 2010, Leite-Pitman & Williams 2011). It is distributed between Colombia and Bolivia and Ecuador, Peru and Brazil, with very few records and in relatively large time windows (Berta 1986, LeitePitman & Williams 2011).

[Image: 1bDP4MV.png]
Figure 1. Place of records logs Atelocynus microtis during the year 2009 in the municipality of Puerto Nariño, Amazonas, Colombia. Yellow stars on the insert map point to collection records.

In Colombia it is considered distributed only in the region Amazon, from 0 to 500 meters above sea level and in the departments of Amazonas, Caquetá, Meta and Vaupés (Alberico et al., 2000, Solari et al. 2013). Among the first records for the country are they cite three specimens from the vicinity of Mitu, Vaupés (collected in 1956), a living female from the Ariari River, Meta and an individual from Restrepo, Meta; everyone Identified by Hernández-Camacho J. and published by Hershkovitz (1961). From these records and other Information compiled by Hershkovitz (1961), is considered that the species is distributed in the country in the Amazonian area up to the upper Orinoco River, including Venezuela, without
However, there are no records that respond to this statement (LeitePitman and Williams 2011). Additionally, based on a search in the GBIF (Global Biodiversity Information Facility) 2014) 10 records were found in collections, eight in the collection of animals of the Research Institute. Alexander von Humboldt (IAvH) and two at the Institute of
Natural Sciences of the National University of Colombia (CIE); of these, none had the exact coordinates and only five were possible to locate them with the data of the locality. (Figure 1). Of these records, two are reference for the fepartment of Meta, while a record was found for the departments of Putumayo, Caquetá and Guaviare. In years the use of trap cameras has allowed the detection of rare and elusive species in previously unknown areas for many of these (O'Connell et al., 2011).

[Image: vriRcut.png]
Figure 2. Recorded photos of Atelocynus microtis during the 2009 in the Amazonian trapeze, Colombia.

In this note we present two new records of Atelocynus
Microtis for the municipality of Puerto Nariño, Department of Amazonas, Colombia. The registration was obtained during a systematic sampling of camera traps to evaluate the influence of hunting on the assembly of mammals, in the Ticuna community of San José de Villa Andrea, on the riverbank of the Loretoyacu River, part of the Aticoya indigenous reservation. The sampling included 12 double trap-camera stations, with a total sampling effort of 264 trap-nights, detecting a total of 16 species. The two records of Atelocynus microtis were obtained in the same station, in the most away from the village within the study (3° 17'4,84¨S, 70 ° 23'31.33¨W). The first record was obtained on June 4 at 10h00 and the second record was obtained on June 18 at 5h40 both in the year 2009 (Figure 2).
[-] The following 1 user Likes Shenzi's post:
  • Claudiu Constantin Nicolaescu

Forum Jump:

Users browsing this thread: 1 Guest(s)