A slender brown lizard with a long tail and small legs that walks with a sinuous, almost serpentine motion. Common in Pacific Northwest gardens, where they control insect pests.

§ Quick facts

SizeTotal length 18–30 cm
Weight15–40 g
LifespanWild 8–12 years
OrderSquamata
FamilyAnguidae

§ Encyclopedia

The northern alligator lizard is a species of medium-sized lizard in the family Anguidae. The species is endemic to the North American west coast.

Source: Wikipedia — Northern alligator lizard Licensed under CC BY-SA 4.0

§ Identification

Field marks. Slender lizard with brown back marked with darker crossbands; pale belly; rounded snout.

Similar species. Other alligator lizards. Western Fence Lizard (different scale pattern).

Voice. N/A.

§ Diet & behavior

Diet. Insects, spiders, small invertebrates.

Behavior. Pacific Northwest lizard of moist coniferous forests. Live-bearing (vs. egg-laying of most US lizards). Cold-tolerant; active at low temperatures.

§ Range

Pacific Northwest

§ Habitat

Coniferous forests, oak woodlands, gardens

§ Threats

Habitat loss to development, outdoor cat predation, garden pesticides.

§ Conservation status

According to the IUCN Red List, the northern alligator lizard is currently classified as Least Concern.

§ What helps

Maintain garden cover. Keep cats indoors. Skip pesticides.

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§ Further reading

§ Sources cited

  • Oregon State University
  • Davidson College Department of Biology
  • IUCN Red List 2010