Final answer:
Creep in animals that looks like a network of trails is known as a terracette, related to the soil movement process called solifluction.
Step-by-step explanation:
Creep associated with animals and resembling a faint network of trails is called a terracette. This phenomenon is related to soil creep, or solifluction, which is commonly observed on grassy slopes. As the soil freezes and thaws, it expands and subsides, creating small terrace-like formations. These formations can be the result of animal activity as well, particularly in areas where livestock such as sheep traverse slopes repeatedly, strengthening the terracing effect.