Final answer:
The correct option is c. Horse and rabbitIn most species, urine should be clear, but horses and rabbits are exceptions where urine may appear cloudy normally. This is due to their unique metabolism and dietary breakdown products.
Step-by-step explanation:
The question you have asked pertains to the normal appearance of urine in various species and which ones may have exceptions to the general rule that urine should be clear. The correct answer to your question is c. Horse and rabbit. These species can have urine that is normally cloudy or of a different color than most other animals' urine due to their unique metabolism and the breakdown of certain plant materials they consume.
For example, the urine of rabbits can be milky due to the presence of calcium carbonate, which is common and normal for the species. Horses can also sometimes have cloudy urine, which is not a sign of disease but rather a result of mucoid substances or crystals that are naturally secreted. While changes in urine color and clarity can indicate certain conditions or hydration levels in many species, it is essential to know the typical characteristics of each specific animal.