Here's why:
* Different species: Javelinas (also known as peccaries) belong to the family Tayassuidae, while boars are part of the family Suidae.
* Significant evolutionary divergence: These two families diverged millions of years ago, resulting in substantial genetic differences.
* Different chromosome numbers: Javelinas have a different number of chromosomes than boars, further hindering the possibility of successful breeding.
Even though they are both pig-like animals, they are as distantly related as horses and zebras, which also cannot interbreed.