3D Models not texturing properly

Hi all,

I have imported 3D models (made in Blender) into Unity, and I can't get the texturing to work properly. Whenever I drag a texture onto one of my models, the object just takes the dominant color of my texture instead of taking the actual texture (see picture below).

I've tried many different tiling values, but nothing seems to work... Why is this happening and how do I fix it?