Hi all, completely new here.
I would like to own some guinea pigs, I’ve only ever grown up with hamsters as small pets as my mum is terrified of rats and mice.
I’m coming up to my 21st birthday and a while back I asked my parents if I could get a new pet for my room. (Completely under my care and I would be paying for everything of course). Yesterday they told me I could get a hamster, which I am fine with but I would like to try something new and I have some got experience and knowledge of Guinea pigs from college (animal care).
What are some pros and some cons of Guinea pigs compared to hamsters? This way I could have a bit more of a compelling conversation with my parents.
Just to be clear, and because I’m not sure what this forum is like. I would never buy anything without my parents permission whilst I am living under their roof. Hence why I haven’t just bought them.
Thank you

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Hi and welcome
You may find our wannabe owners' guide collection hopefully very helpful; it should answer most of your your questions!
Are Guinea Pigs For Me? - A Guide
Please be aware the guinea pigs are ground roaming group animals; they should not be kept alone and they need as much space as you can afford; the welfare miminum is 2x4 ft for a pair. They do not climb or nest, but they love to run, popcorn (exactly like that, especially youngsters) and to burrow in a soft pile of hay. Hay is also their main food; it should make up to 80% of the daily food intake.
The safest place to get guinea pigs from is one of our recommended good standard rescues, which all practice a mandatory quarantine/vet care plus a pregnancy watch for incoming sows. Their pairs are carefully matched to allow for character compatibility which is the key for a successful and long term stable pairing. Going good rescue (please note that anybody in the English speaking world can call themselves a rescue or breeder without licence or any supervision/control) allows you to avoid all the usual pitfalls that await the unwary (things like ringworm, mange mites, respiratory infection; mis-sexed piggies and unplanned pregnancies or fighting teenage boars); you also have the rescue to fall back on if you can no longer keep your piggies.
Guinea pigs live for about 5-7 years unless they develop a serious medical condition, but they can live for longer.
You are very likely to require vet care at some point, which you need to factor into the regular upkeep cost as a major illness can quickly run into several 100 dollars or pounds. Since there is little in terms of insurance for small furries, it is usually best to save up in 'piggy bank' fund for any emergencies, operations or costly treatment right from the start.
Guinea pigs are most active in the mornings and evenings, but potter around throughout the day or night; adults are usually browsing quietly during that time.
If you want an easy start to see whether piggies are really for you, I would recommend to start with an adult pair that is used to handling, comfortable with who they are and very willing to enjoy a loving home and to teach you about the fascinating world of piggydom rather than having to start with getting some wiggly youngsters that have not had any real human interaction in the first place and then having to get them through the hormonal teenage months, which can be rather stressful. Babies are cute for only a few weeks, teenagers for several months and adults for most of their lives.
Older piggies are also less vocal and boisterous, which would likely make them a lot more acceptable to your parents. A middle aged pair can still easily live double as long as a hamster and there is less nighttime activity, which might be an argument in favour of guinea pigs.
You can find more detailed information including links to rescues in several countries you are in perfectly safe hands with in our guide collection.
I would also recommend to have a look at our C&C cage members' gallery to see how cage solutions can look like; best start from the latest cages at the back.
Member Gallery: C&C cages/homemade cages
You are welcome to ask any questions you may have, and we will do our best to answer them honestly.
While we all love our piggies, it is important that you know what you are getting into and are committed, including getting your parents on your side. The last thing we want is to contribute to the growing flood of no longer wanted pets!
It is great that you are doing your research. Please make sure that your parents are willing to look after them if you are on holiday. Some rescues also offer holiday boarding for adoptees.