13. Tiny Filly Horse
Found In: All Over
Estimated Cost: $700*
These newborn horses, often called foals, are smaller than the average human being, standing between 15 and 22 inches tall at birth. This image shows a puppy and a tiny horse side by side, with little to no size difference between them.

But horses grow quite quickly; by the time they turn a year old, their height has nearly reached adult proportions. Therefore, this size won’t survive very long if you’re looking to buy little baby horses just because they’re so cute.
14. Young Mice
Found In: All Places
Estimated Cost: N/A
It makes sense that mice will have almost microscopic offspring because they are not huge creatures themselves. These newborns weigh the same as a sheet of paper and are about the size of a quarter when they are born.

Moreover, they are frequently called “pinkies” due to the fact that their infant bodies are completely hairless. Even though baby rats are only an inch larger than mice, they are nevertheless regarded as being very little at birth. Either way, it’s a good thing these rodents are little because they can be a pain in the ass.
15. Cat with Rusty Spots
Found in: Eastern Sri Lanka and India.
Price: Not specified
Due to its declining population, the rusty-spotted cat—the smallest and rarest cat species in the world—is categorized as a “vulnerable” species of animal. Their bodies can only develop up to a maximum of 20 inches, even at full maturity.

Approximately half the size of a typical house cat, they are. Even though they share many characteristics with leopards, like their spots and ears, they appear far less menacing due to their small stature. Although the species is not very dangerous, it does exhibit the typical wild cat aggression.
