The Taco Terrier is a small, energetic hybrid breed, a mix between a Chihuahua and a Fox Terrier. Known for their lively and playful nature, they possess a keen intelligence and loyalty. They typically have a compact body, expressive eyes, and ears that can be either upright or floppy.

The Taco Terrier is not a naturally occurring wild species but a designer dog breed. As such, it does not have a native region in the wild. The breed is a mix between the Chihuahua and the Toy Fox Terrier, both of which have distinct native regions. The Chihuahua originates from Mexico, while the Toy Fox Terrier was developed in the United States.

As a domestic breed, the Taco Terrier is typically found in human habitats. It thrives in household environments where it is provided with shelter, food, and companionship. The breed can adapt to various living conditions but requires a moderate climate, avoiding extremely cold or hot temperatures.

The Taco Terrier occupies the ecological niche of a companion animal. It is bred for companionship and does not have a role in the wild ecosystem. Its ecological interactions are primarily with humans and other domestic animals within a household setting.