Right Treats for Mongolian Gerbils, and What Gerbils Can Eat
What gerbils can eat sounds simple until one source lists oranges as suitable and another says avoid citrus. Here is how the sources compare.
Table of Contents
🚨 Vet Now: If your gerbil ate something on the skip list and seems unwell, or has moist droppings, soiled hindquarters or sharply changed eating or drinking, call a vet experienced with gerbils straight away. Don’t wait.
What can gerbils eat? Pellets first, treats second
A gerbil-formulated pellet or mix is the base diet for Mongolian gerbils, and treats are small, occasional extras. The RSPCA, PDSA, Merck and several retailers agree on a short safe list and split on other foods, so this guide shows who says what.
If your gerbil just ate something
Start with the red box above, then the vet section near the end.
If you’re choosing treats today
The safe list is next.
If you’ve fed sunflower seeds or a seed mix
Many shop mixes and older guides list them, so you’re in good company; the swaps are below.
🩺 Health Note: This is general information, not a substitute for an exam by a vet experienced with gerbils. Moist droppings, soiled hindquarters or a sharp change in eating or drinking need a vet straight away. If you don’t have an exotics vet yet, find one before you need one.
Safe gerbil treats most sources agree on
Apple, pear, carrot, cucumber, blueberries, strawberries, boiled or scrambled egg and mealworms are each named as suitable for Mongolian gerbils by at least two of five sources compared on October 10, 2026.
| Food | Named as suitable by | Key Detail |
|---|---|---|
| Apple | RSPCA, WebMD, Chewy, Omlet | Chewy says remove seeds |
| Pear | RSPCA, WebMD, Chewy, Omlet | Omlet suggests a slice |
| Carrot | RSPCA, WebMD, Chewy, Omlet | Chewy says cut small |
| Cucumber | RSPCA, Chewy | RSPCA lists it as a supplement to pellets |
| Blueberries | WebMD, Chewy, Omlet | Omlet suggests a few |
| Strawberries | WebMD, Chewy, Omlet | Chewy says remove the leaf |
| Boiled or scrambled egg | PDSA, WebMD | PDSA calls it a healthy treat |
| Mealworms | PDSA, WebMD | PDSA calls them a healthy treat |
Compiled October 10, 2026 from published pages, not our own testing. Chewy and Omlet are retailer guides.
The base diet comes first
Treats sit on a pellet formulated for gerbils, which Merck calls the healthiest choice. Choosing the bag is covered in our guide to the best gerbil food.
Fruit and vegetable pieces the sources agree on
Apple, pear and carrot appear in the RSPCA’s gerbil feeding guidance, WebMD, Chewy and Omlet, and no source gives a piece size. Banana, peas, broccoli and melon have thinner support.
Egg and mealworms: the protein treats
PDSA lists boiled or scrambled egg and mealworms as healthy treats, and WebMD names both.
Sunflower seeds, nuts and treat sticks: the fat problem
Sources disagree on seeds and nuts for Mongolian gerbils, yet most call them rare treats.
| Food | Says occasional or fine | Says avoid or limit |
|---|---|---|
| Pumpkin seeds | RSPCA (healthy treat), Merck (occasional), WebMD (swap for sunflower), Chewy (unsalted), Omlet, Burgess (better choice) | None |
| Sunflower seeds | Merck (occasional), Chewy (unsalted, occasional), Omlet US list | RSPCA (large amounts fatty, obesity), PDSA (rarely), WebMD (high fat), Burgess (avoid) |
| Nuts | Chewy (unsalted peanuts, almonds), Omlet (unsalted peanut) | PDSA (rarely), Burgess (avoid) |
| Honey sticks | None | PDSA (rarely) |
| Sugary colored treats | None | Burgess (very high in sugar), a humane-society care sheet (avoid sugar and high-fat treats) |
Compiled October 10, 2026 from published pages, not our own testing.
Sunflower and pumpkin seeds
Merck’s gerbil diet advice says pumpkin or sunflower seeds can be an occasional treat, and the RSPCA warns that large amounts of sunflower seeds can cause obesity.
Nuts: where sources split
Chewy and Omlet allow unsalted peanuts, PDSA’s gerbil diet advice calls nuts rare treats, and Burgess says avoid them.
Honey sticks and sugary treats: what to check on the label
PDSA calls honey sticks rare treats, Burgess says colorful treats are very high in sugar, and Chewy accepts only treats low in sugar and free of artificial additives.
🔄 Outdated Advice: A 2015 PBS Pet Travel blog suggests scattering sunflower seeds and peanuts as treats, but Merck, the RSPCA and PDSA call sunflower seeds occasional or rare.
Can gerbils eat oranges, beans or lettuce? Sources split
Sources contradict each other on these foods for Mongolian gerbils.
| Food | Says suitable | Says avoid |
|---|---|---|
| Oranges and citrus | RSPCA (oranges), WebMD (oranges in its fruit list) | Omlet (mouth sores), Chewy (can irritate digestion), Burgess (toxic to rodents), WebMD (citrus in its avoid list) |
| Beans | PDSA (beans, lentils, peas, chickpeas), Omlet (broad beans) | WebMD |
| Lettuce | WebMD (romaine), Chewy (leafy greens) | Omlet |
| Cabbage | Burgess, PBS Pet Travel | Omlet |
| Meat | PDSA (lean meat) | Omlet (meat of any kind) |
| Pasta | WebMD (dry pasta, occasionally) | Burgess (pasta and bread) |
Compiled October 10, 2026 from published pages, not our own testing.
Oranges and other citrus
The RSPCA names oranges as a supplement fruit, while Omlet, Chewy and Burgess say avoid citrus. WebMD lists oranges as suitable and citrus fruits as dangerous on the same page.
Beans, lettuce and cabbage
PDSA lists beans as healthy treats and WebMD calls them dangerous. WebMD lists romaine lettuce, but Omlet says avoid lettuce and cabbage.
Meat and pasta
PDSA allows lean meat and WebMD dry pasta, while Omlet says avoid meat and Burgess says pasta can cause digestive problems. Our editorial rule of thumb, not a source’s: a skipped food costs a gerbil nothing, and if you offer a disputed one, change foods slowly, since the RSPCA advises against sudden changes.
Foods gerbils should never eat, grapes included
If your Mongolian gerbil already ate any of these and seems unwell, call a vet experienced with gerbils straight away.
| Food | Source | What it says | Key Detail |
|---|---|---|---|
| Grapes | RSPCA | Poisonous to rodents | Welfare charity |
| Grapes | WebMD, Burgess | Avoid; dangerous or toxic | WebMD is DVM-reviewed |
| Rhubarb | RSPCA, WebMD, Burgess | Poisonous or toxic | |
| Chocolate | WebMD, Chewy, Burgess, a humane-society care sheet | Dangerous, toxic or a serious medical risk | Consumer, retailer and shelter sources |
| Caffeine, alcohol | Chewy (caffeine), the care sheet (both) | Avoid | Retailer and shelter sources |
| Onion, garlic | WebMD and Chewy (onion), Chewy and Burgess (garlic) | Dangerous, toxic or poisonous | Consumer and retailer sources |
Compiled October 10, 2026 from published pages, not our own testing. No source we compared explains how any of these harms a gerbil.
Grapes and rhubarb
The RSPCA calls grapes and rhubarb poisonous to rodents, and Burgess and WebMD also say to avoid them.
🔄 Outdated Advice: Omlet’s US food list still names grape as suitable, so check any gerbil list against the RSPCA.
Chocolate, caffeine, alcohol, onion and garlic
WebMD and Chewy list chocolate and onions as dangerous or toxic. Chewy adds garlic and caffeine, and a humane-society care sheet adds alcohol.
Processed snacks and treats made for other pets
Omlet lists chips, cakes, cookies, candy and French fries as foods that can do serious damage. Treat lists written for hamsters, rabbits or rats are not checked against gerbil sources, so don’t borrow them.
How many treats, how often, and how to serve them
No source we compared gives a gram figure for treats for Mongolian gerbils; Merck’s only figure, 5 g a day, is for pellets.
| Source | Says | Key Detail |
|---|---|---|
| Merck | 5 g of pellets a day avoids obesity and diabetes; seeds occasional | Veterinary manual |
| RSPCA | Follow the maker’s guidance; scatter food; remove stale food daily | Welfare charity |
| PDSA | Small amounts of fresh food; treats every so often | Vets |
| WebMD | Vegetables daily, fruit every other day | No source tied to the frequencies |
| Chewy | Treats a few times a week, under 10% of daily calories | Retailer; no source given |
Compiled October 10, 2026 from published pages, not our own testing.
How often: sources differ
WebMD says vegetables daily and fruit every other day, Chewy says a few times a week, and PDSA says every so often.
Scatter feeding and stale food
The RSPCA says scatter feeding helps prevent squabbling, and stale food should go daily because gerbils hoard. A humane-society care sheet says to discard fruit and vegetables not eaten within a few hours. In a deep gerbil tank setup for a pair, check the whole tank for stashes, and see foraging without a ball for ideas.
Washing up after feeding
CDC’s small-mammal hygiene advice says to wash hands after handling small mammals, their food or supplies. Moist droppings or soiled hindquarters need a vet experienced with gerbils straight away.
My gerbil ate something on the skip list. Now what?
If a Mongolian gerbil ate something on the skip list, call a vet experienced with gerbils straight away; don’t wait to see whether it settles, and don’t try to treat it at home.
What to do right now
The RSPCA lists moist droppings, soiled hindquarters and changed eating or drinking as reasons to see a vet straight away. The CDC adds sluggishness and abnormal breathing.
What to tell the vet
Say what the gerbil ate, roughly how much, and when.
Finding a vet who sees gerbils
The AEMV directory lists exotic-mammal vets, but its description doesn’t name gerbils, so ask each clinic whether it sees them.
Quick answers about gerbil treats and safe foods
1. Can gerbils eat sunflower seeds?
Only as a rare treat: the RSPCA warns large amounts are fatty and can cause obesity, and PDSA says give them rarely.
2. Can gerbils eat grapes?
No: the RSPCA says grapes are poisonous to rodents. If your gerbil ate some and seems unwell, call a vet straight away.
3. Can gerbils eat apples?
Yes, in small pieces: the RSPCA, WebMD, Chewy and Omlet list apple, and Chewy says remove the seeds.
4. Can gerbils eat carrots?
Yes: the RSPCA, WebMD, Chewy and Omlet all list carrot, and Chewy says to cut it small.
5. Can gerbils eat pumpkin seeds?
Occasionally: the RSPCA calls them a healthy treat, Merck says occasional, and Burgess calls them a better choice than sunflower seeds.
6. Can gerbils eat oranges?
Sources split: the RSPCA names oranges as a supplement fruit, while Omlet, Chewy and Burgess say avoid citrus.
7. What foods are toxic to gerbils?
The RSPCA names grapes and rhubarb; WebMD and Chewy add chocolate and onions. If your gerbil seems unwell after eating one, call a vet straight away.
8. How often can gerbils have treats?
Sources differ: WebMD says vegetables daily and fruit every other day, Chewy says a few times a week, and none gives a gram figure.
9. Can gerbils eat lettuce?
Sources split: WebMD lists romaine and Chewy lists leafy greens, while Omlet says avoid lettuce.
10. What if my gerbil ate something it shouldn’t?
Call a vet experienced with gerbils straight away; don’t wait to see whether it settles, and don’t treat it at home.
Your next step: check your gerbils’ treats against the list
Check your treat jar today against the skip list, and remove any honey stick or sugary colored treat. Then find a vet experienced with gerbils before you need one, using the directory above. The RSPCA, PDSA and Merck all describe treats as small or occasional, so a few well-chosen ones are plenty.
