Gold tegu

[Ceratodromeus]

Scientific classification:
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Lacertilia
Family: Teiidae
Genus: Tupinambis
Species: T. teguixin

Description: the gold tegu is a large bodied, brilliantly colored Teiid. The contrasting black & yellow/ gold banding makes it an eye-catching species. They can grow to lengths of 2 to 3 feet. Males can be distinguished from females by the large 'jowls' they possess, though not as extreme as seen in the Argentine black and white tegu. T. teguixin is a  powerfully built animal, with large tails and Strong jaws. A study conducted in 2002 By Mcbrayer{1} demonstrates how hard these lizards can bite [See below].

Lizard SVL(mm)[Sex]	# of bites	Mean bite force(N)	SD	Range(N)
296 [f]	14	62	17.1	14-90
314 [f]	6	54	3.1	51-57
313 [m]	5	55	7.9	44-62
318 [m]	17	86	19.2	22-105
321 [m]	6	73	2.0	72-76

Geographic range: This lizard can be found throughout most of Northern South America.

Dietary habits: The gold tegu is an oppurtunistic, omivorous forager. A study conducted in 1994{2} concluded that plant matter and Dastropods make up a signficant portion of T. teguixin's diet(see below). These lizards are active foragers, even taking to the water in search of suitable prey. Predation events on giant otter cubs have also been documented.{3}

Reproduction:Sexual interactions such as courtship consist of conspicuous displays and they occur about one month later of hibernation emergence, with
oviposition come weeks later both in captivity and in the wild. During September - October, before eggs are laid, female ovaries
are composed of large yellow vitellogenic follicles 23 - 25 mm in diameter and 8 -9g in mass. In a comparative was, just laid eggs average 17g in mass and are 42 mm long x 27 mm wide.{4} The young hatch 30 days later, and share the coloration of the adults(albeit with more constrasting patterning.

References:
{1}McBrayer, Lance D., and Thomas D. White. "Bite force, behavior, and electromyography in the teiid lizard, Tupinambis teguixin." Copeia 2002.1 (2002): 111-119.
{2}Mercolli, C., and A. Yanosky. "The diet of adult Tupinambis teguixin (Sauria: Teiidae) in the eastern chaco of Argentina." Herpetological journal 4.1 (1994): 15-19.
{3} Weber Rosas, F.C., Mendes Cabral, M.M. and Mattos, G.E. de (2008). Predation or Scavenging of Giant Otter (Pteronura brasiliensis) Cubs by Lizards? IUCN Otter Spec. Group Bull. 25 (1): 100 - 103
{4}Yanosky, Ángel Alberto, and Claudia Mercolli. "Preliminary observations on the reproductive cycle of female Tegu lizards (Tupinambis teguizin)." Cuadernos de Herpetología 6 (1991).

[Ceratodromeus]

Predation on eggs of Schneider’s dwarf caiman, Paleosuchus trigonatus (Schneider, 1807), by armadillos and other predators
Abstract
Nests of Schneider’s dwarf caiman, Paleosuchus trigonatus, were
located in the forests around three streams that drain into the
Xingu River, Brazilian Amazonia, in October 2014. Camera traps
were installed at the edge of four nests to document predators
and female parental care. At two nests, females unsuccessfully
defended their nests against one or more giant armadillos,
Priodontes maximus, and nine-banded armadillos, Dasypus novemcinctus.
Both armadillo species responded to the attack by fleeing
and returning on the opposite side of the nest by going around
the tree under which the nest was located. Giant armadillos have
never before been recorded consuming caiman eggs and their
diet has been described as consisting mostly of ants and termites.
Another species of armadillo, Cabassous unicinctus, was also registered
digging into a nest and probably consuming eggs, though it
is generally considered to be primarily insectivorous. A tayra (Eira
barbara), lizard (Tupinambis teguixin) and coati (Nasua nasua) were
also registered taking eggs from nests during the day, but we
obtained no registers of nest defence by caimans during the day.
The three nests were attacked after 60 days of incubation, when
the eggs were well developed

"...The third nest had 12 eggs and embryos 77 days old when it was attacked by a coati
(Nasua nasua) on 28 December 2014 for 12 minutes. A lizard (Tupinambis teguixin) ate
the rest of the eggs 2 days later, between 1235 and 1242 hrs.
No predators or caimans were recorded at a fourth nest, and the 17 eggs hatched
after about 95 days of incubation, assuming that they were laid on 1 October 2014"
link to study