Onion
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vegetable
avoid
fatal toxicity
TOXIC to reptiles. Contains compounds that cause oxidative damage to red blood cells.
Do not feed
Onion is unsafe for reptiles due to fatal toxicity. Avoid feeding entirely. Onions contain n-propyl disulfide and other compounds toxic to reptiles. This includes all varieties: white yellow red green onions shallots and leeks.
Nutritional breakdown
Calcium
23mg
Phosphorus
29mg
Ca:P Ratio
0.80:1
Protein
1.1g
Fat
0.1g
Fiber
1.7g
Sugar
4.2g
Vitamin A
2IU
Chemical properties
Oxalate level
none
Goitrogen level
none
Chitin level
none
Fat content
very low
Gut loading value
none
Feeding guidelines
Frequency
Never feed onion to reptiles.
Preparation
Do not prepare — this food should not be offered.
Common misconceptions
Sometimes ends up in reptile food accidentally when keepers share kitchen scraps — all parts of onion are toxic to reptiles.
Sourcing & method
Feeding method
fresh
Seasonal availability
year round
Disclaimer: Nutritional values can vary based on growing conditions, soil quality, or specific insect diets. Always provide a varied diet to ensure comprehensive nutrition for your reptile.
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