Specimen Information

Alligator mississippiensis
Alligator mississippiensis
(American alligator)
Native Transplant

Specimen ID1703175
Common NameAmerican alligator
LocalityLake Keesus
Mapping AccuracyAccurate
HUC8 NameUpper Rock
HUC8 Number07090001
HUC10 NameOconomowoc River
HUC10 Number0709000105
HUC12 NameLittle Oconomowoc River-Oconomowoc River
HUC12 Number070900010501
Collection Day27
Collection Month11
Collection Year2022
Year AccuracyActual
Potential Pathwayreleased pet | escaped captivity pet
Reference 1
Ref. Number:39419
Author:O'Neill, M.
Title:Waukesha County Lake Keesus gator head dragged in by cat
Publisher:Fox6 News
Reference 2
Ref. Number:39420
Author:Wainscott, K.
Title:Cat finds severed alligator head in Waukesha County lake
Publisher:WISN 12 News
CommentsNon-preserved head was pulled from the lake by a cat. The cat's owner believes they saw a live alligator in the lake the previous week, and neighbors reported seeing a resident Bald Eagle eating something they speculate may have been the alligator. Based on head length, the alligator was estimated to be approximately three feet long.
Record TypeLiterature
VerifierTim Aspenson, WIDNR
Number Collected1
SizeFull length estimated at 3 feet


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Citation information: U.S. Geological Survey. [2023]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/4/2023].

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