| Erinaceus europaeus | Hedgehog | Presumably common |
| Talpa europaeus | Mole | Mole hills common in grasslands and woodlands |
| Sorex araneus | Common Shrew | Occasional - can be prominent along the track between Moreton and Stratford |
| Sorex minutus | Pygmy Shrew | Status uncertain - one found under timber, but probably more common |
| Neomys fodiens | Water Shrew | Status uncertain - one seen inside Nunnery Hide |
| Rhinolophus hipposideros | Lesser Horseshoe Bat | One regularly used Sutton Wick hide as a nocturnal roost, but was found dead there in April 2008 |
| Myotis brandti | Brandt's Bat | Rare foraging records, one once seen roosting in Moreton hide |
| Myotis nattereri | Natterer's Bat | Foraging records |
| Myotis daubentoni | Daubenton's Bat | Sometimes over Herriott’s Pool |
| Nyctalus noctula | Noctule Bat | Rare foraging records |
| Nyctalus leisleri | Leisler's Bat | Rare foraging records |
| Pipistrellus pipistrellus | Common Pipistrelle | Fairly common |
| Pipistrellus pygmaeus | Soprano Pipistrelle | Fairly common |
| Pipistrellus nathusii | Nathusius' Pipistrelle | The first known British breeding colony was at Chew |
| Plecotus auritus | Brown Long-eared Bat | Sometimes seen hunting around woods in the evening |
| Oryctolagus cuniculus | Rabbit | Common |
| Lepus europaeus | Brown Hare | Only seen very infrequently, usually in the Parkland/Heron's Green Pool area |
| Sciurus carolinensis | Grey Squirrel | Common |
| Clethrionomys glareolus | Bank Vole | Much less frequent than the next species |
| Microtus agrestis | Field Vole | Common in grasslands, numbers fluctuate |
| Apodemus sylvaticus | Wood Mouse | Common |
| Micromys minutus | Harvest Mouse | Significant colonies historically at the southern end of the lake, though not recorded recently |
| Mus domesticus | House Mouse | Rare around buildings |
| Rattus norvegicus | Common Rat | Common |
| Vulpes vulpes | Red Fox | Fairly common (especially in autumn) - a record of 15 seen at once in August 2005! |
| Mustela putorius | Polecat | Several records recently of apparent Polecats, including two records of females with young |
| Mustela erminea | Stoat | Rarely seen, but present |
| Mustela nivalis | Weasel | Seen more often than last the previous species |
| Mustela vison | Mink | Was common, now much less so, but more records in 2008, including a dead kitten found at Herriott's Bridge |
| Meles meles | Badger | Several setts |
| Lutra lutra | Otter | Became extinct, now very occasioanl sightings, with four together in winter 09/10 |
| Capreolus capreolus | Roe Deer | Common and regularly seen, increasing |
| Muntiacus reevesi | Muntjac | Very rare, but two seen on a few occasions in autumn 2009 |
| Phocoena phocoena | Harbour Porpoise | One, after storms |
