Brown tree snake vs Red-sided Garter Snake
How does the Brown tree snake compare to the Red-sided Garter Snake? They are both members of the Colubridae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Boiga irregularis
- Thamnophis sirtalis parietalis
- Classification
- Reptile
- Reptile
- Family
- Colubridae
- Colubridae
- Habitat
- Forests, woodlands, and urban areas
- Grasslands, prairies, forest edges, and wetlands
- Diet
- Carnivore
- Carnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 10-15 years
- 4-6 years in the wild
- Weight
- 100-500 grams
- 50-150 grams
Brown tree snake vs Red-sided Garter Snake: who would win?

Brown tree snake
100-500 grams

Red-sided Garter Snake
50-150 grams
Brown tree snake wins moderate confidence
Brown tree snake is substantially heavier (100-500 grams vs 50-150 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are reptiles.
- Both belong to the Colubridae family.
- Both have a carnivore diet.
- Both are listed as Least Concern.
Differences
- Habitat: Forests, woodlands, and urban areas vs Grasslands, prairies, forest edges, and wetlands.
- Weight: 100-500 grams vs 50-150 grams.
Brown tree snake vs Red-sided Garter Snake: FAQ
Who would win in a fight, a Brown tree snake or a Red-sided Garter Snake?
Brown tree snake wins. Brown tree snake is substantially heavier (100-500 grams vs 50-150 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Brown tree snake and a Red-sided Garter Snake?
Brown tree snake and Red-sided Garter Snake differ in several ways — habitat: forests, woodlands, and urban areas vs grasslands, prairies, forest edges, and wetlands. weight: 100-500 grams vs 50-150 grams.
Do Brown tree snake and Red-sided Garter Snake live in the same habitat?
No — Brown tree snake lives in forests, woodlands, and urban areas, while Red-sided Garter Snake is found in grasslands, prairies, forest edges, and wetlands.
What do Brown tree snake and Red-sided Garter Snake eat?
Both Brown tree snake and Red-sided Garter Snake have a carnivore diet.
Which is more endangered, the Brown tree snake or the Red-sided Garter Snake?
Brown tree snake is listed as Least Concern, while Red-sided Garter Snake is listed as Least Concern.
How big are Brown tree snake and Red-sided Garter Snake?
Brown tree snake weighs around 100-500 grams, while Red-sided Garter Snake weighs around 50-150 grams.

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Brown tree snake

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Red-sided Garter Snake







