Choose the right Frozen Feeders for your snake using this quick weight-based feeding chart. This quick snake feeder size chart helps reptile owners select properly sized feeder mice and frozen rats help support healthy digestion, growth, and consistent feeding for hatchlings, juveniles, and adult snakes.
Use this page when you’re ordering and want a fast, reliable frozen feeders pick.
How to use this chart (30 seconds)
- Weigh your snake in grams (g)
- Use ~10% of body weight as a simple starting point (juveniles often a bit higher, adults often a bit lower).
- Pick the feeder whose gram range matches your target.
Shop by category: Frozen Feeder Mice | Frozen Feeder Rats
Snake weight → recommended Big Cheese feeder size (by weight)
Rule of thumb used here: target prey is roughly ~10% of snake weight as a starting point.
| Snake Weight (g) | Target Prey (g) | Best Big Cheese Options |
| 25–50g | 2.5–5g | Large Pinky Mice (2.0–3.9g) or Fuzzy Mice (4.0–6.0g) |
| 50–100g | 5–10g | Fuzzy Mice (4.0–6.0g) or Hopper Mice (7.0–12.0g) |
| 100–170g | 10–17g | Hopper Mice (7.0–12.0g) or Small Adult Mice (13–17g) |
| 170–290g | 17–29g | Adult Mice (18–29g) |
| 290–390g | 29–39g | Jumbo Mice (30–39g) |
| 390–840g | 39–84g | Colossal Mice (40–90g) or Small Rats (46–84g) |
| 840–1,490g | 84–149g | Medium Rats (85–149g) |
| 1,490–2,790g | 149–279g | Large Rats (150–279g) |
| 2,790–3,990g | 279–399g | Jumbo Rats (280–399g) |
| 4,000g+ | 400g+ | Colossal Rats (500–900g) (some can be 900g+) |
Big Cheese feeder weights (quick reference)
Mice (grams each)
Many hatchling and juvenile snakes begin with appropriately sized feeder mice before transitioning to larger rodents.
| Mouse Size | Weight Range |
| Small Pinky | 1.0–1.99g |
| Large Pinky | 2.0–3.9g |
| Fuzzy | 4.0–6.0g |
| Hopper | 7.0–12.0g |
| Small Adult | 13–17g |
| Adult | 18–29g |
| Jumbo | 30–39g |
| Colossal | 40–90g |
Smaller species and juvenile snakes commonly feed on fuzzy mice, hopper mice, and adult mice during growth stages.
Rats (grams each)
Larger snakes and mature constrictors often transition from mice to Feeder Rats for improved feeding efficiency and larger meal sizing.
| Rat Size | Weight Range |
| Pinky | 3.0–9.0g |
| Fuzzy | 10–18g |
| Pup | 19–29g |
| Weaned | 30–45g |
| Small | 46–84g |
| Medium | 85–149g |
| Large | 150–279g |
| Jumbo | 280–399g |
| Colossal | 500–900g (some 900g+) |
Adult ball pythons, boas, and larger snakes commonly feed on small, medium, or large frozen rats depending on species and body condition.
When to Transition from Mice to Rats
Many reptile keepers transition snakes from mice to rats once:
- Adult mice are no longer sufficient
- Larger prey is needed for healthy growth
- Feeding multiple mice becomes inefficient
Rats provide:
- Larger prey options
- Higher caloric density
- Better long-term feeding efficiency
- More appropriate sizing for adult constrictors
However, many smaller colubrids remain on mice throughout adulthood.
One-Line Safety Note
If your snake falls between feeder sizes, choose the smaller prey item for the next meal and gradually increase feeder size over time.
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