A Muskrat in Howard Co., Maryland (4/26/2014).

View Record Details Photo by Bonnie Ott MBP List

A Muskrat in Prince George's Co., Maryland (3/30/2016).

View Record Details Photo by Frode Jacobsen MBP List

Muskrat at Fort Smallwood Park in Anne Arundel Co., Maryland (5/21/2011). (c) Bill Hubick, all rights reserved. (Photo ID: 777054 - Psn: 25)

View Record Details Photo by Bill Hubick MBP List

A Muskrat in Prince George's Co., Maryland (3/30/2016).

View Record Details Photo by Frode Jacobsen MBP List

Muskrat in Anne Arundel Co., Maryland (5/4/2008). (c) Bill Hubick, all rights reserved. (Photo ID: 777055 - Psn: 32)

View Record Details Photo by Bill Hubick MBP List

A Muskrat in Howard Co., Maryland (3/22/2014). Richard observed it entering its burrow in a bank via an entrance below the water's surface.

View Record Details Photo by Richard Orr MBP List

Muskrat in Frederick Co., Maryland (1/13/2022). No rights reserved.

View Record Details Photo by Andy Wilson via iNaturalist MBP List

A Muskrat in Harford Co., Maryland (4/3/2015).

View Record Details Photo by Mark Johnson MBP List

A Muskrat in Montgomery Co., Maryland (4/9/2005).

Photo by Bill Hubick MBP List

A Muskrat in Kent Co., Maryland (4/7/2007).

Photo by Bill Hubick MBP List

A juvenile Muskrat in Baltimore Co., Maryland (4/21/2015).

View Record Details Photo by Andrew Clemens MBP List

A Muskrat in Calvert Co., Maryland (8/24/2018).

View Record Details Photo by Jesse Christopherson MBP List

Muskrat in Carroll Co., Maryland (2/2/2022). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 523383 - Psn: 55)

Muskrat in Carroll Co., Maryland (2/2/2022). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Muskrat in Baltimore Co., Maryland (3/6/2014). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 705634 - Psn: 55)

Muskrat in Baltimore Co., Maryland (3/6/2014). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

Muskrat in Montgomery Co., Maryland (3/16/2023). (c) Scot Magnotta, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 764207 - Psn: 65)

Muskrat in Montgomery Co., Maryland (3/16/2023). (c) Scot Magnotta, some rights reserved (CC BY-NC).

View Record Details Photo by Scot Magnotta via iNaturalist MBP List

Muskrat in Prince George's Co., Maryland (3/30/2016). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 731381 - Psn: 66)

Muskrat in Prince George's Co., Maryland (3/30/2016). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

A Muskrat in St. Mary's Co., Maryland (6/8/2013).

View Record Details Photo by Jane Kostenko MBP List

A Muskrat in Harford Co., Maryland (4/18/2018).

View Record Details Photo by Josh Emm MBP List

Muskrat in Anne Arundel Co., Maryland (11/1/2023). (c) Ken Clark, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 911962 - Psn: 88)

Muskrat in Anne Arundel Co., Maryland (11/1/2023). (c) Ken Clark, some rights reserved (CC BY).

View Record Details Photo by Ken Clark via iNaturalist MBP List

Muskrat in Talbot Co., Maryland (11/26/2024). (c) portofbaltimore, some rights reserved (CC BY-NC)

View Record Details Photo by portofbaltimore via iNaturalist MBP List

A Muskrat in Garrett Co., Maryland (1/12/2019).

View Record Details Photo by William Blauvelt MBP List

A Muskrat lodge in Montgomery Co., Maryland (1/2/2016).

View Record Details Photo by Bonnie Bell MBP List

Muskrat in Dorchester Co., Maryland (4/14/2025). (c) Jonathan Irons, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1233625 - Psn: 200)

Muskrat in Dorchester Co., Maryland (4/14/2025). (c) Jonathan Irons, some rights reserved (CC BY-NC).

View Record Details Photo by Jonathan Irons via iNaturalist MBP List

Muskrat in Anne Arundel Co., Maryland (4/12/2026). (c) Stephen John Davies, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1485758 - Psn: 200)

Muskrat in Anne Arundel Co., Maryland (4/12/2026). (c) Stephen John Davies, some rights reserved (CC BY-NC)

View Record Details Photo by Stephen John Davies via iNaturalist MBP List

A Muskrat skull found at Andelot Farm, Kent Co., Maryland.

Photo by Missy Kalb MBP List

Muskrat bones in Dorchester Co., Maryland (12/28/2022). (c) orionid, some rights reserved (<a rel='license' href='https://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 716691 - Psn: 455)

Muskrat bones in Dorchester Co., Maryland (12/28/2022). (c) orionid, some rights reserved (CC BY-NC).

View Record Details Photo by orionid via iNaturalist MBP List

Muskrat bones in Dorchester Co., Maryland (12/28/2022). (c) orionid, some rights reserved (CC BY-NC).

View Record Details Photo by orionid via iNaturalist MBP List

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

A Muskrat in Howard Co., Maryland (4/26/2014). View Record Details Media by Bonnie Ott.

A Muskrat in Prince George's Co., Maryland (3/30/2016). View Record Details Media by Frode Jacobsen.

A Muskrat in Howard Co., Maryland (3/22/2014). Richard observed it entering its burrow in a bank via an entrance below the water's surface. View Record Details Media by Richard Orr.

Muskrat in Frederick Co., Maryland (1/13/2022). No rights reserved. View Record Details Media by Andy Wilson via iNaturalist.

A Muskrat in Harford Co., Maryland (4/3/2015). View Record Details Media by Mark Johnson.

A Muskrat in Montgomery Co., Maryland (4/9/2005). Media by Bill Hubick.

A Muskrat in Kent Co., Maryland (4/7/2007). Media by Bill Hubick.

A juvenile Muskrat in Baltimore Co., Maryland (4/21/2015). View Record Details Media by Andrew Clemens.

A Muskrat in Calvert Co., Maryland (8/24/2018). View Record Details Media by Jesse Christopherson.

Muskrat in Carroll Co., Maryland (2/2/2022). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Muskrat in Baltimore Co., Maryland (3/6/2014). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Muskrat in Montgomery Co., Maryland (3/16/2023). (c) Scot Magnotta, some rights reserved (CC BY-NC). View Record Details Media by Scot Magnotta via iNaturalist.

Muskrat in Prince George's Co., Maryland (3/30/2016). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

A Muskrat in St. Mary's Co., Maryland (6/8/2013). View Record Details Media by Jane Kostenko.

A Muskrat in Harford Co., Maryland (4/18/2018). View Record Details Media by Josh Emm.

Muskrat in Anne Arundel Co., Maryland (11/1/2023). (c) Ken Clark, some rights reserved (CC BY). View Record Details Media by Ken Clark via iNaturalist.

Muskrat in Talbot Co., Maryland (11/26/2024). (c) portofbaltimore, some rights reserved (CC BY-NC) View Record Details Media by portofbaltimore via iNaturalist.

A Muskrat in Garrett Co., Maryland (1/12/2019). View Record Details Media by William Blauvelt.

A Muskrat lodge in Montgomery Co., Maryland (1/2/2016). View Record Details Media by Bonnie Bell.

Muskrat in Dorchester Co., Maryland (4/14/2025). (c) Jonathan Irons, some rights reserved (CC BY-NC). View Record Details Media by Jonathan Irons via iNaturalist.

Muskrat in Anne Arundel Co., Maryland (4/12/2026). (c) Stephen John Davies, some rights reserved (CC BY-NC) View Record Details Media by Stephen John Davies via iNaturalist.

A Muskrat skull found at Andelot Farm, Kent Co., Maryland. Media by Missy Kalb.

Muskrat bones in Dorchester Co., Maryland (12/28/2022). (c) orionid, some rights reserved (CC BY-NC). View Record Details Media by orionid via iNaturalist.