Before any trapper starts trapping, all trappers should be familar with what trap sizes should be used for the fur bearers we intend to catch. For example We wouldnt use a #4 long spring to catch muskrats as it is to large of a trap. Below are some trap size recomedations for some of the common furbearers. If a furbear is not listed I recommend using a trap recommended for a simular sized furbearer.
Bobcat
#1 3/4 coilspring Approximate Jaw spread 5 3/8 inches
#2 coilspring Approximate Jaw spread 5 1/2 inches
#2 coilspring Padded Jaws Approximate Jaw spread 5 1/2 inches
#3 coilspring Approximate Jaw spread 6 1/4 inches
#3coilspring Padded Jaws Approximate Jaw spread 6 inches
#3 Double longspring Approximate Jaw spread 5 1/2 inches
Beaver
#3 coilspring Approximate Jaw spread 6 1/4 inches
#3coilspring Padded Jaws Approximate Jaw spread 6 inches
#3 Double longspring Approximate Jaw spread 5 1/2 inches
#4 coilspring Approximate Jaw spread 6 inches
#4 Double longspring Approximate Jaw spread 6 inches
#5 Double longspring Approximate Jaw spread 8 3/8 inches
#220 Double spring Conibear Aproximate jaw spread 7" x 7"
#280 Double spring Conibear Aproximate jaw spread 8" x 8"
#330 Double spring Conibear Aproximate jaw spread 10" x 10"
Coyote
#1 3/4 coilspring Approximate Jaw spread 5 3/8 inches
#2 coilspring Approximate Jaw spread 5 1/2 inches
#2 coilspring Padded Jaws Approximate Jaw spread 5 1/2 inches
#3 coilspring Approximate Jaw spread 6 1/4 inches
#3coilspring Padded Jaws Approximate Jaw spread 6 inches
#3 Double longspring Approximate Jaw spread 5 1/2 inches
#4 Double longspring Approximate Jaw spread 6 inches
Fox
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
#1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
#1 3/4 coilspring Approximate Jaw spread 5 3/8 inches
#2 coilspring Approximate Jaw spread 5 1/2 inches
#2 coilspring Padded Jaws Approximate Jaw spread 5 1/2 inches
Mink
#1 coilspring Approximate Jaw spread 4 inches
#1 coilspring padded jaws Approximate Jaw spread 4 1/4 inches
#1 longspring Approximate Jaw spread 4 inches
#11 Double longspring Approximate Jaw spread 4 inches
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
#1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
#1 1/2 longspring Approximate Jaw spread 4 3/4 inches
#110 Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
#120 Double spring Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
#160 Double spring Conibear Aproximate jaw spread 6" x 6"

Muskrat
#1 coilspring Approximate Jaw spread 4 inches
#1 coilspring padded jaws Approximate Jaw spread 4 1/4 inches
#1 longspring Approximate Jaw spread 4 inches
#11 longspring ( two springs) Approximate Jaw spread 4 inches
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
#1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
#1 1/2 longspring Approximate Jaw spread 4 3/4 inches
#110 Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
#120 Double spring Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
#160 Double spring Conibear Aproximate jaw spread 6" x 6"

Opossum
#1 coilspring Approximate Jaw spread 4 inches
#1 coilspring padded jaws Approximate Jaw spread 4 1/4 inches
#1 longspring Approximate Jaw spread 4 inches
#11 longspring ( two springs) Approximate Jaw spread 4 inches
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
# 1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
# 1 1/2 longspring Approximate Jaw spread 4 3/4 inches
# 1 3/4 coilspring Approximate Jaw spread 5 3/8 inches
# 2 Double longspring Approximate Jaw spread 4 3/4 inches
#160 Double spring Conibear Aproximate jaw spread 6" x 6"
#220 Double spring Conibear Aproximate jaw spread 7" x 7"

Otter
#2 coilspring Padded Jaws Approximate Jaw spread 5 1/2 inches
#3 coilspring Approximate Jaw spread 6 1/4 inches
#3coilspring Padded Jaws Approximate Jaw spread 6 inches
#3 Double longspring Approximate Jaw spread 5 1/2 inches
#4 coilspring Approximate Jaw spread 6 inches
#4 Double longspring Approximate Jaw spread 6 inches
#220 Double spring Conibear Aproximate jaw spread 7" x 7"
#280 Double spring Conibear Aproximate jaw spread 8" x 8"
#330 Double spring Conibear Aproximate jaw spread 10" x 10"

Raccoon
#1 coilspring Approximate Jaw spread 4 inches
#1 coilspring padded jaws Approximate Jaw spread 4 1/4 inches
#1 longspring Approximate Jaw spread 4 inches
#11 longspring ( two springs) Approximate Jaw spread 4 inches
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
# 1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
# 1 1/2 longspring Approximate Jaw spread 4 3/4 inches
# 2 Double longspring Approximate Jaw spread 4 3/4 inches
#160 Double spring Conibear Aproximate jaw spread 6" x 6"
#220 Double spring Conibear Aproximate jaw spread 7" x 7"
#280 Double spring Conibear Aproximate jaw spread 8" x 8"

Skunk
#1 coilspring Approximate Jaw spread 4 inches
#1 coilspring padded jaws Approximate Jaw spread 4 1/4 inches
#1 longspring Approximate Jaw spread 4 inches
#11 longspring ( two springs) Approximate Jaw spread 4 inches
# 1 1/2 coilspring Approximate Jaw spread 4 7/8 inches
# 1 1/2 coilspring padded jaws Approximate Jaw spread 5 inches
# 1 1/2 longspring Approximate Jaw spread 4 3/4 inches
#160 Double spring Conibear Aproximate jaw spread 6" x 6"
#220 Double spring Conibear Aproximate jaw spread 7" x 7"
Weasel
# 0 Longspring Approximate Jaw spread 3 1/2 inches
#110 Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
#120 Double spring Conibear Aproximate jaw spread 4 1/2" x 4 1/2"
I hope you have found this information helpful in your trap selection process. By using the proper size traps for the target animal you will produce a better catch with less damages to the animal. There are many traps on the market today but it is your responsibility as a trapper to use the proper one for the job.

Happy Trapping,
For Education ~ Not For Profit
This page was last updated: November 26, 2009
YoungTrappers.com
12266 Puffer Rd
Fife Lake, Mi 49633
231-879-3820