Colorado River toad (Incilius alvarius)
Amphibians · Difficulty: Intermediate
Key facts and care guidance for Colorado River toad (Incilius alvarius) (origin: The Sonoran Desert (Arizona, northern Mexico)). Adult size around 11–19 cm. Life expectancy 10–20 years. The values below are carefully researched guidance.
Short answers
Colorado River toad: How big does the enclosure need to be?
100×50×50 cm.
Colorado River toad: What temperature does it need?
Daytime 26–32 °C, basking spot No basking spot, at night 18–22 °C.
Colorado River toad: Does it need UVB lighting?
UVB: Recommended (UVB 2–5 %).
Colorado River toad: How long do they live?
Life expectancy: 10–20 years.
Colorado River toad: Is it suitable for beginners?
Rather not – it is considered an intermediate species (difficulty: Intermediate).
Climate
- Daytime temperature
- 26–32 °C
- Night temperature
- 18–22 °C
- Basking spot
- No basking spot
- Humidity
- 40–55 %, a short rainy season
- UVB
- Recommended (UVB 2–5 %)
Enclosure
- Minimum size
- 100×50×50 cm
- Substrate
- Sand-loam they can dig in, stones, a shallow water dish
Feeding
- Food
- Large insects, roaches, earthworms
- Feeding interval
- 2×/week
Key facts
- Adult size
- 11–19 cm
- Life expectancy
- 10–20 years
- Origin
- The Sonoran Desert (Arizona, northern Mexico)
- Protection status
- IMPORTANT: The skin secretion contains 5-MeO-DMT, which falls under German narcotics law. The toad itself may be kept – extracting, possessing and passing on the secretion are criminal offences. In parts of its range, taking it from the wild is additionally prohibited.
- Brumation
- A dry rest of 8–12 weeks
- Cohabitation
- Keeping singly is always safe. A pair works as long as both animals are roughly the same size and are fed separately. As soon as one animal refuses food, loses weight or shows injuries, separate them - this is not an exception but the planned normal case.
Notes
A desert species with a long dry rest and a short rainy season; without this rhythm there is no breeding. The skin toxin is highly active in humans and pets – never lick it or let it be milked, as dogs die from it. The legal position around the secretion is unambiguous: hands off.
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Related species
- African common toad (Sclerophrys regularis) – Beginner
- Cane toad (Rhinella marina) – Beginner
- American toad (Anaxyrus americanus) – Beginner
- Asian common toad (Duttaphrynus melanostictus) – Beginner
- Common toad (Bufo bufo) – Beginner
- Natterjack toad (Epidalea calamita) – Intermediate
- European green toad (Bufotes viridis) – Intermediate
- Italian crested newt (Triturus carnifex) – Intermediate
What you need to start
To keep Colorado River toad (Incilius alvarius) you typically need: a suitable enclosure (100×50×50 cm), substrate (Sand-loam they can dig in, stones, a shallow water dish), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.
The complete, interactive care database is in the Reptoria app.
Last updated: 30 October 2026 · Editor: Reptoria editorial team · Sources include: https://de.wikipedia.org/wiki/Coloradokr%C3%B6te, https://en.wikipedia.org/wiki/Incilius
All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).