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Gerbils & Hamsters/my hamsters are suddenly fighting


I have one male sapphire hamster, just call him john. for a few weeks he was alone because the other hamsters died. so I bought him another sapphire hamster to keep him company.
at first, I planned to buy one female for company but then I changed my mind and bought a couple instead, just call them joni and nina.

I tried to bring joni and nina to meet john, my lone survivor hamster. And they got along quite quickly. soon they became friends and I put them together in the same cage. they slept together, played together just like any happy hamsters. Until suddenly one night after a few weeks or approximately one month and few weeks later, JONI and NINA got into a huge fight.

I dont know whats wrong or what they've gotten into, they just started fighting like a bunch of mad dogs and i swear there had never been ANY problem or whatsoever before. the 3 of them have always been so peaceful. I love animals especially hamsters so I've always paid extra attention to my hammies.

now the funny thing is, only joni and nina that gotten into a fight. john, on the other hand, had no problem at all! he still got along well with nina! and out of the blue, nina just hate joni. she will always turned into some kind of a monster whenever she's near joni. So she would cuddled and played together with JOHN, but NOT with JONI! now joni's always alone in the corner :((((
anyway, I decided to just separate joni alone for now, while john and nina are still in the same cage.

but im still depressed! what should i do now?? why are they suddenly fighting like this?? this is no ordinary fight. they fought like they are two different hamsters that just met each other!
I swear i feel like im watching some hamster drama here!
please help me pleaseee :((

Syrian sized Hamsters are naturally solitary animals and will fight when put together. Dwarf hamsters can live in same sex groups but are know to fight and kill each other when non litter stock is added and in male groups even when related at maturity. Once 1 starts to fight the others may follow suit.
The solitary hamster should be kept a part from the other 2 permanently.
you should not be putting male and females together unless you want to breed and to do this you must have multiple cages and know the background of the stock you wish to breed. Never breed litter mates or gentically related stock.
The female cannot be kept with the male when ready to give birth.  

Gerbils & Hamsters

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K L Gardner


I have hands on experience in caring for Rabbits and Rodents for over 20 years, as well as pet store supervisory experience including overlooking the treatment of sick or injured animals. Rabbits and Guinea Pigs and Rodents are my speciality. I have kept everything from Dwarf breeds to Continental Giant Rabbits and various varieties of Guinea Pig and other rodents including Rats, Gerbils, Mice, Degu, Chinchilla, Dwarf Hamster, Syrian Hamster. I can give advice on husbandry, breeding, housing, diet, retail law, general buying your pet and what to look out for and health problems. I can also advise on bonding Rabbits and Guinea Pigs and other rodents. I do advise that if your pet has an ailment that your priority is veterinary help but i will answer questions where i can on pets undergoing treatment by a vet where a diagnoses has been issued. Ailments do need inspection by a trained vet to diagnose any health problems


I am certified in: Animal nutrition and pet care/store management level 3. This includes animal husbandry, hygiene, retail and animal welfare law, lagomorphs (Rabbits), Rodents (Cavies/Guinea Pigs Rats and mice and the alike), Reptiles and Aquatics. I have also attended a Reptile keeping course. I am also certified in general retail and retail law. I am at present writing books on both Rabbits and Guinea pigs I have Rabbit and Guinea pig keeping and rescuing experience


7 GCSE's Further educated in office computer studies,retail and pet care Educated to store management level in pet care Educated in reptile care Educated in pet nutrition

Awards and Honors
Certificates in Office studies-CLAIT and IBT2 Retail NVQ2 Pet care/Store Management certificates including retail law and pet acts LEVEL 3 Pet nutrition including exotic pets, cats and dogs Reptile husbandry

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