Animal conduit

1. An animal conduit comprising:

a tubular unit comprising a first and a second end opening, a plurality of first ridges, and a plurality of second ridges;

the plurality of first and second ridges extending inwardly toward a longitudinal center line of the tubular unit and forming a reduced conduit dimension in a first direction and a regular conduit dimension in a second direction;

the plurality of first and second ridges being regularly spaced to provide easy climbing for both a dwarf hamster and a regular hamster;

wherein at least one of the plurality of first or second ridges comprises a U-shape in cross-section.

2. The animal conduit of claim 1 , wherein at least one of the plurality of first or second ridges form corrugations in the tubular unit.

3. The animal conduit of claim 1 , wherein at least one of the plurality of first and second ridges comprises a gripping edge.

4. The animal conduit of claim 1 , wherein the reduced conduit dimension comprises 1.65 inches.

5. The animal conduit of claim 4 , wherein the regular conduit dimension comprises 1.97 inches.

6. The animal conduit of claim 1 , wherein the regular conduit dimension comprises 1.97 inches.

7. An animal conduit comprising:

a tubular unit comprising a first and a second end opening, a plurality of first ridges, and a plurality of second ridges;

the plurality of first and second ridges extending inwardly toward a longitudinal center line of the tubular unit and forming a reduced conduit dimension in a first direction and a regular conduit dimension in a second direction;

the plurality of first and second ridges being regularly spaced to provide easy climbing for both a dwarf hamster and a regular hamster;

wherein the plurality of first ridges comprises a rung.

8. The animal conduit of claim 7 , wherein at least one of the plurality of first and second ridges comprises a gripping edge.

9. The animal conduit of claim 7 , wherein at least one of the plurality of first or second ridges form corrugations in the tubular unit.

10. The animal conduit of claim 7 , wherein the reduced conduit dimension comprises 1.65 inches.

11. The animal conduit of claim 10 , wherein the regular conduit dimension comprises 1.97 inches.

12. The animal conduit of claim 7 , wherein the regular conduit dimension comprises 1.97 inches.

13. An animal conduit comprising:

a first and a second longitudinal segment, each segment comprising a plurality of ridges extending inward toward a longitudinal centerline of the animal conduit; the ridges differing in a dimension extending inward and forming a first and second transverse conduit opening dimension that differ.

14. The animal conduit of claim 13 , wherein the plurality of ridges are spaced apart to provide a climbing aid to a small animal.

15. The animal conduit of claim 13 , wherein the plurality of ridges comprises a first type of ridge and a second type of ridge.

16. The animal conduit of claim 15 , wherein the first type of ridge comprises a radius that is different than a radius of the second type of ridge.

17. The animal conduit of claim 13 , wherein the first transverse conduit opening dimension comprises 1.65 inches and the second transverse conduit opening dimension comprises 1.97 inches.

18. The animal conduit of claim 13 , wherein the animal conduit comprises a generally tubular dimension.

19. The animal conduit of claim 13 , further comprising end portions for joining to a like animal conduit.