Rattus norvegicus (Common rat)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Austbø skole | Rogaland, Norway | 7 | 1 | 0 | 1997-10-14 |
| Jordet skole | Vestfold, Norway | 6 | 1 | 0 | 2005-09-13 |
| Svein Danielsen | Vestland, Norway | 6 | 1 | 0 | 2024-01-22 |
| Per louis Rasmussen | Vestland, Norway | 5 | 1 | 0 | 2021-01-19 |
| Heine A. Halstensen | Vestland, Norway | 5 | 1 | 0 | 2024-01-20 |
| Brunla ungdomsskole | Vestfold, Norway | 5 | 1 | 0 | 1998-09-18 |
| Åstveit skole | Vestland, Norway | 5 | 1 | 0 | 1995-09-20 |
| Liland skole | Nordland, Norway | 5 | 1 | 0 | 1999-09-16 |
| Erdal ungdomsskole | Vestland, Norway | 5 | 1 | 0 | 1995-10-13 |
| Eivind Hovin | Innlandet, Norway | 5 | 1 | 0 | 2022-02-06 |
| Grødem skole | Rogaland, Norway | 4 | 1 | 0 | 1994-12-01 |
| Hafrsfjord skole | Rogaland, Norway | 4 | 1 | 0 | 1996-10-02 |
| Marianne Thompson | Vestland, Norway | 4 | 1 | 0 | 2023-01-28 |
| Tingsaker skole | Agder, Norway | 4 | 1 | 0 | 2000-10-23 |
| Grasmyr ungdomsskole | Telemark, Norway | 4 | 1 | 0 | 1998-09-23 |
| Store Bergan skole | Vestfold, Norway | 4 | 1 | 0 | 1998-09-17 |
| Geir Svoren | Akershus, Norway | 4 | 1 | 0 | 2024-01-22 |
| Tromøy ungdomsskole | Agder, Norway | 4 | 1 | 0 | 2003-09-15 |
| W MacBone | Akershus, Norway | 4 | 1 | 0 | 2024-01-28 |
| Goa skole | Rogaland, Norway | 4 | 1 | 0 | 1996-10-02 |
| Skeie skole | Rogaland, Norway | 4 | 1 | 0 | 1998-06-09 |
| Chr. Gregers | Oslo, Norway | 3 | 1 | 0 | 2018-01-28 |
| Lilly Solberg | Vestland, Norway | 3 | 1 | 0 | 2024-01-27 |
| Husvik skole | Vestfold, Norway | 3 | 1 | 0 | 1999-09-10 |
| Anita norseth | Akershus, Norway | 3 | 1 | 0 | 2022-01-29 |
| Øyvind Grev Møgster | Akershus, Norway | 3 | 1 | 0 | 2024-01-28 |
| Marianne Lynum | Akershus, Norway | 3 | 1 | 0 | 2023-01-29 |
| Oddvar Kilen | Akershus, Norway | 3 | 1 | 0 | 2024-01-28 |
| Horten videregående skole/Avd Skippergata | Vestfold, Norway | 3 | 1 | 0 | 1998-10-08 |
| annika Nordström | Trøndelag, Norway | 3 | 1 | 0 | 2024-01-31 |
| Tanja Sandåker | Agder, Norway | 3 | 1 | 0 | 2018-01-27 |
| Heidi Brandvoll | Telemark, Norway | 3 | 1 | 0 | 2021-01-31 |
| Mesterfjellet ungdomsskole | Vestfold, Norway | 3 | 1 | 0 | 1998-09-24 |
| Horten videregående skole/Avd Bekkegata | Vestfold, Norway | 3 | 1 | 0 | 1993-11-29 |
| Mellomhagen ungdomsskole | Vestfold, Norway | 3 | 1 | 0 | 1996-10-16 |
| KARI HELENE SÆLØEN | Agder, Norway | 3 | 1 | 0 | 2023-01-20 |
| Tananger ungdomsskole | Rogaland, Norway | 3 | 1 | 0 | 1995-09-08 |
| Kristin D. Stavseth | Oslo, Norway | 3 | 1 | 0 | 2021-01-30 |
| Myklebust skule | Møre og Romsdal, Norway | 2 | 1 | 0 | 1997-10-09 |
| Samfundets skole Egersund | Rogaland, Norway | 2 | 1 | 0 | 2009-09-18 |
| Reidun Madsen | Telemark, Norway | 2 | 1 | 0 | 2021-02-03 |
| elin sissener | Agder, Norway | 2 | 1 | 0 | 2014-04-01 |
| Dag L. Fjeldstad | Rogaland, Norway | 2 | 1 | 0 | 2018-01-28 |
| Else Korsnes | Møre og Romsdal, Norway | 2 | 1 | 0 | 2018-01-28 |
| Kai Børtung | Rogaland, Norway | 2 | 1 | 0 | 2024-01-19 |
| Helle & Jens Chr. Thysted | Telemark, Norway | 2 | 1 | 0 | 2024-01-27 |
| Varden ungdomsskole | Vestfold, Norway | 2 | 1 | 0 | 1999-05-04 |
| Birgit Elisabeth Vidvei | Trøndelag, Norway | 2 | 1 | 0 | 2016-02-14 |
| Valderøy barneskule | Møre og Romsdal, Norway | 2 | 1 | 0 | 1993-10-13 |
| Færder videregående skole | Vestfold, Norway | 2 | 1 | 0 | 1995-10-19 |