Snake Identifier
Portuguese Viper (Vipera latastei)
Lataste's viper imported from iNaturalist photo 195892319 on 5 September 2023 by (c) Carminda Santos, some rights reserved (CC BY), via Wikimedia Commons, licensed under CC BY 4.0
Vipers

Portuguese Viper

Vipera latastei

A small viper of the Iberian Peninsula and northwestern Africa, recognizable by a soft nasal appendage similar to its close relatives.

Venomous?
Venomous
Adult length
0.4-0.7 m (1.3-2.3 ft)
Range
Iberian Peninsula and northwestern Africa

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Overview

The Portuguese Viper, also widely known as Lataste's Viper, occurs across much of Portugal, Spain, and parts of Morocco and Algeria. It favors dry, scrubby habitats and is the only viper species native to most of Portugal.

It is closely related to the long-nosed viper of southeastern Europe and shares a similar nasal projection, though the two occupy largely separate ranges.

How to identify it

  • Grayish, brownish, or reddish body with a dark zigzag or blotched dorsal pattern
  • Small, soft, upturned scale on the tip of the snout
  • Head distinct from the neck, though smaller overall than related species
  • Vertical pupils
  • Distinguished from the common European adder by the nasal appendage and generally more southern range

Habitat & range

Found in dry scrubland, rocky hillsides, open woodland, and cultivated margins across the Iberian Peninsula and parts of northwestern Africa, from lowlands to moderate elevations.

Behavior, diet & reproduction

Diurnal in cooler seasons, more crepuscular in summer heat. Feeds on small mammals, lizards, and occasionally birds. Ambushes prey from cover. Gives birth to live young in late summer or autumn.

Frequently asked questions

Is the Portuguese Viper venomous?

Yes, it is a venomous species, though generally less dangerous than some other European vipers due to lower venom yield.

Where is the Portuguese Viper found?

Across Portugal, Spain, and parts of Morocco and Algeria.

What is the nasal projection for?

A small, soft, upturned scale on the snout, similar to that of the related long-nosed viper, likely aiding camouflage.

What does the Portuguese Viper eat?

Small mammals, lizards, and occasionally birds.