Beaver vs. Muskrat Damage: Identification & Massachusetts Law

Question: Pond plants (lilies, willows, lilacs) broken off, dragged into water. Muskrats trapped before, but now larger damage. Landscaper saw flat-tailed beaver. Boston suburbs. How to ID and legally remove?

Answer: Evidence Points to Beaver

Key ID: Cutting Angle

• Small branches (< finger thickness): 45° angle cuts = beaver
• Larger trunks: Pencil-point cuts = beaver
• Muskrats: eat vegetation/cattails; build bank lodges; don't fell woody stems

Immediate Action: Protect Valuable Trees

• Wire cages (heavy gauge) around trunks
• See prevention guides

Massachusetts Beaver Law (Specific)

1. Permit required from local Board of Health (health/safety threat needed)
2. Contact MassWildlife (Division of Fisheries & Wildlife) for trapper referrals
3. Trapped beavers must be euthanized—relocation illegal in MA
4. Hire qualified professional—beavers become trap-wise
5. Fur trappers may work in November (seasonal)

Context

1996 trap ban (ballot initiative) removed effective tools; control is now costly & regulated.