In a future web-series I want to create, there is a species of massive humanoids named giants (Homo gigas) (technically, there are still humans, just not Homo sapiens). They are less social than anatomically modern humans, they are as solitary as orangutans (meaning they are often alone, but they can be genuine friends, and even romantic partners with each other, and they almost never kill each other). Giants are also omnivores with herbivorous tendencies like gorillas and squirrels, instead of being true omnivores like bonobos and catfish. Adult giants are as massive as polar bears, and, like lobsters, crocodiles, and kangaroos, are adolescents (or teenagers, if you want) all their lives, in the sense that they never stop growing. If we compare them to anatomically modern humans, in terms of both interpersonal and linguistic intelligences, they are mildly mentally disabled, but in terms of both intrapersonal and naturalistic intelligences, they are geniuses. Finally, they are much more likely to be autistic and slightly more likely to be empaths, and much less likely to be sociopaths than anatomically modern humans.
But, they still have a culture. Their main religion worships the following animals: great white sharks, ostriches, dogs (including dingoes, wolves, coyotes, and jackals), horses, pigs (including wild boars), bovines, murids (all the three main rat species: black, brown, and Polynesian, and house mice), and nonhuman apes (all members of the gibbon family, orangutans, gorillas, and both chimpanzee species). Consuming these animals (like eating the fat, drinking the blood, and smoking the hair or the feathers or the scales) equals sacrilege. Their religion is polytheistic with eight main deities (or gods and goddesses if you want) who look like hybrids between humans and their sacred animals, and they have twenty-four minor deities who look more like nonanimal organisms.
In real life, many humans are afraid of murids, because they transmit deadly infectious diseases to them, including plague, tuberculosis (which is technically a disease that originated in humans, but humans transmitted it to other primates, rodents, and many other mammals), and hantavirus-related hemorrhagic fever. Also, because of that, there are many religions that consider rodents unclean animals (like both Judaism and Islam prohibit the consummation of any rodent meat, and some Christian denominations like the Church of Latter Day Saints).
The only real life religion I know that consider murids (or at the very least only rats) sacred animals is Hinduism (there is a famous temple in India where we can find thousands of rats, and we must not voluntarily kill them).
So, I wonder why would murids like both house mice and brown rats be sacred animals.