A mouse and/or rat.
a mouse
Rabbits.
no. Coniferous trees have needle-shaped leaves that stay on in the winter and they produce brown cones that hold its seeds. Oak leaves fall off in the fall, are not shaped like needle and the tree does not produce brown cones.
brown dead
heterzygous with brown leaves
a gopher
All the Leaves Are Brown was created in 1965.
The Sassafras tree has left mitten, right mitten and three lobed leaves. It makes a nice rich brown tea.
Rattan
Brown leaves also contain chlorophyll but the brown pigment mask the green pigment and hence the leaves appear brown.
A rat?
For some plants, the brown leaves slow the growing of the plant since brown leaves are basically dead leaves, but for most plants, people just cut them off because it looks more presentable that way. Usually they can live and grow with the brown leaves still there.
description of the leaves
In fact no. Rabbits are actually small mammals (Brown rat, woodchuck, beaver's, etc)