This bunny has more detail than the typical kids’ coloring page — defined fur direction, visible muscle shape in the haunches, and a more naturalistic pose. It’s still very printable and doable, but it rewards a bit more patience and a willingness to blend colors.
Colored pencils work especially well here. Layer a warm gray or tan base, then add darker shading along the edges and under the chin. Leave white space on the belly and between the ears.