Colossal Mice – Regular Price – $1.69
Six months old and are retired breeders.
Recommended for: Snakes, birds of prey, large lizards, monitors, large amphibians, and other exotic carnivorous pets
Safer alternative to live feeding: Frozen/thawed feeders help reduce the chance of injury during feeding sessions
Quantity per package: 20 Colossal Mice per bag
Coat type: White With Fur
Size range: 8 sizes available, from Small Pinky to Colossal
| Bigcheese Options | Weight |
|---|---|
| Small pinky (1-2 days old) | 1.0 - 1.99 g |
| Large pinky (3 - 4 days old) | 2.0 - 3.99 g |
| Fuzzy (5 - 9 days old) | 4.0 - 6.99 g |
| Hopper | 7.0 - 12.0 g |
| Small Adult | 13 - 17 g |
| Adult | 18 - 29 g |
| Jumbo | 30-39 g |
| Colossal | 40-70 g |
Age: 6 months old
Individual Weight: 40–70 g
Bag Weight: 800–1,400 g
Length (head & body): 4.0–5.0 inches
Quantity in packs: 20
Fur Condition: Fur
Development Stage: 6 months old; retired breeders
Storage Instructions: Keep frozen until feeding
Feeding Style: Frozen / Thawed feeder mice
Feeding tip: Choose a feeder approximately equal to the widest portion of your reptile’s body. When unsure, selecting a slightly smaller feeder is often recommended to prevent regurgitation and keeps feeding stress-free.
Flash frozen: Quickly frozen after processing to help retain freshness and nutritional quality
packaging shelf life: Food-grade vacuum-sealed bags to minimize freezer burn and extend
Diet: Raised on scientifically formulated feed to optimize health and nutritional value
Size accuracy: Each unit is individually weighed for consistent, reliable sizing
Euthanasia method: CO₂ euthanasia process following AVMA guidelines
Insulation system: High-performance encapsulated fiber-glass insulated blanket
Handling environment: Processed in a sanitary, professionally managed facility
Irradiation: Treated by irradiation for added safety for you and your pet
Shipping carrier: FedEx Ground
Delivery method: Shipped with dry ice to ensure the product stays frozen in transit
Availability: In stock year-round with a consistent nationwide supply
Shipping details: Orders received before 8:00 AM CST on Monday will ship that same Monday
| Nutrient | Percentage |
|---|---|
| Protein | 15.4% |
| Fat | 8.0% |
| Ash | 2.7% |
| Moisture | 71.9% |
| Energy(kcal/g) | 5.3 |
At 40–70 g each, colossal mice are retired breeders at 6 months old. The heaviest and longest mice in the range are at 4.0–5.0 inches.
Each mouse weighs 40–70 g, so 20 pieces already yield 800–1,400 g per bag, a comparable total mass to larger-count bags of smaller feeders.
Yes, if your reptile reliably accepts jumbo mice without regurgitation. The colossal size is the natural next step up for growing large-bodied reptiles.
They arrive frozen. Orders ship with dry ice via FedEx Ground and are packed in a fiberglass-insulated blanket to maintain frozen temperature during transit.
It refers to their role in the breeding colony, not a health concern. They are processed, irradiated, and packaged under the same sanitary standards as all other sizes.
Thaw in the refrigerator or in a sealed bag under warm water. Ensure the feeder is completely thawed to the core, not just surface-warm, before offering it to your reptile.
I’ve been in the reptile hobby for over 15 years, and consistency is everything. Big Cheese has never let me down. Every order shows up exactly how it should—clean, properly packaged, and ready to go. That kind of reliability is rare these days.
After FedEx lost my first shipment... I received the replacement shipment yesterday! My snakes ate this morning :-).I have never ordered from The Big Cheese Rodent Factory before. I have gotten rats from expos and other online retailers. I used AI to hunt through options and landed with you. A few points... First, with the FedEx problem. I could not have dreamed of a better response from your company. I appreciate how quickly you shipped out the replacement rats! Second, your rats are the cleanest rats I have ever seen, and packaged extremely well!. My snakes are great eaters (2 adult ball pythons a juvenile boa and an adult boa) . All of the snakes ate immediately when the rats were offered.I want to thank and praise you for this entire experience. If you have a list of places that are more influential for me to leave a positive review please let me know.I will 100% order from you again (and again, and again) Thanks!
This was the first time I have ordered from your company as well as ordering frozen mice/rats through the mail. I am so impressed with the shipment, packing, and the way the mice/rats are packaged. I have not opened them yet, but they appear to be very fresh. The Go Herping channel on Youtube highly recommended your company. I look forward to trying out your products on my milk snake and ball python. With the way you took such care in the packing of the rodents, as well as the packing/shipping, I am quite sure I will be very pleased. Thank you so much and have a wonderful afternoon.
I placed my order and received my order in perfect condition. Thanks for your help, looking forward to doing more business with you in the future.
Hi, just wanted to say that our rodents arrived today. Wednesday the 21st. You guys have outstanding rodents. After buying from a petshop the last few years, I’ve seen the light. There is o comparison. My snakes ate like they’d never had a meal before, LOL
We received the mice last week and are very happy with them. Thanks a lot for making this so easy, and I’ll be happy to give you my business when we need feeders in the future.
I just had to stop in the middle of a feeding session to thank you. Just as food and water are the staples of human life, of course rodents are the sole foundation of my career. I have been impressed lately with the quality of your rodents. Not just lately, but all along. It just […]
- Don
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