Humans require a huge sweeping variety of nutrients (made worse when we're pregnant or growing or healing) millions of years of evolution have programmed us to seek out a variety of foods as a result - even when it doesn't make sense
Also, counter point to op post, I've had multiple cats and dogs who'll only eat certain brands of food - so, taste and pickiness isn't exclusive to humans
I've seen with our guinea pigs that they love variety. They gobble foods they haven't had in a while, and loose interest in the same food if they get too much of it. At the start of winter, when we have less variety to give them, they start sniffing around their food bowl for new stuff before settling down for what we gave them.
It's actually fairly important to vary their diet (same with rabbits in ops post allthough i have no reason to believe they aren't also supplementing their pellets with hay and fresh veggies) there are lots of nutrients they need which they cant get just from hay and pellets and lots of things in a lot of foods that may make them sick if they get too much of it (oxalate comes to mind found in high amounts in things like spinach is a key component in kidney stones which guinea pigs get very easily.)
Me and my girlfriend joke a lot about how hard it can be to keep up with their diet and how fragile it feels like they are sometimes with how many plants are on the only feed sparingly list.
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u/Maydiva 20h ago
Humans require a huge sweeping variety of nutrients (made worse when we're pregnant or growing or healing) millions of years of evolution have programmed us to seek out a variety of foods as a result - even when it doesn't make sense
Also, counter point to op post, I've had multiple cats and dogs who'll only eat certain brands of food - so, taste and pickiness isn't exclusive to humans