1. The penes of male animals are used for reproduction.
2. The penes of some insects are extremely long in comparison to their body size.
3. The penes of certain fish species have evolved to have unique shapes and sizes.
4. The scientist studied the penes of various species to understand their reproductive strategies.
5. The researcher discovered that the penes of birds can vary significantly in size and shape.
6. The penes of mammals are typically covered by a protective sheath when not in use.
7. The biologist examined the penes of different reptiles to determine their mating behaviors.
8. The artist created a sculpture of various animal penes to highlight their diversity in nature.
9. The student learned about the evolution of penes in different species during their biology class.
10. The veterinarian examined the penes of the male dog during a routine check-up.