Answer:
There are more than 2 mammals with hymens - including humans and other primates such as lemurs and chimpanzees, however other species do as well such as elephants, mole rats, llamas, horses. In female guinea pigs, the hymen will dissolve to allow breeding, then grows back to cover the entire vagina. Although not mammal in nature, some aquatic animals also have a hymen such as some whale species, seals, and manatees.