My mammal list is huge, often when I go on birding trips I usually takes a sperate day in try to see other animals than birds, you got a more variety on you trip that way.
Will try to list all my mammal records.
Kenya:
Reticulated giraffe: In Samburu national park (North Kenya).
Baringo Giraffe: In Lake Nakuru national park (West Kenya).
Masai Giraffe: In Masai Mara (South Kenya).
Gerenuk: In Sambaru national park (North Kenya).
Grants gazelle: In Samburu, Aberdare, Lake Nakuru and Masai Mara.
Thomson gazelle: In Lake Nakuru and Masai Mara.
Impala: In Samburu and Masai Mara.
Common eland: In Masai Mara.
Greater kudu: In Samburu.
African elephant: In Samburu, Aberdare and Masai Mara.
Oryx: In Samburu.
Common waterbuck: In Samburu.
Defassa waterbuck: In Lake Nukuru, Aberdare and Masai Mara.
Bohor reedbuck: In Masai Mara.
Black rhino: In Aberdare.
White rhino: In Lake Nukuru.
Hippopotamus: In Lake Navisha and Masai Mara.
Warthog: In Samburu, Aberdare, Lake Nakuru and Masai Mara.
Bushbock: In Aberdare.
Cokes hartebeest: In Masai Mara.
Topi: In Masai Mara.
Common Zebra: In Masai Mara.
Grevys zebra: In Samburu.
Grey duiker: Lake Nukuru and Masai Mara.
Gunters dik-dik: In Sambaru.
African buffalo: In Sambaru and Masai Mara.
Wildebeest: In Masai Mara.
Rock dassie: In Masai Mara.
Aardvark: Sambaru and Masai Mara.
4 species of squirrel: 3 in Sambaru and 1 in Aberdare.
Pangolin: In Aberdare and Masai Mara.
Olive baboon: In Sambaru, Aberdare, Lake Nakuru and Masai Mara.
Green monkey: In Sambaru and Masai Mara.
Abyssinian black and white colobus: In Lake Nakuru.
Zanzibar red colobus: On Zanzibar, Tanzania.
Common jackal: In Masai Mara.
Black-backed jackal: In Samburu, Lake Nakuru and Masai Mara.
Common genet: In Sambaru.
Dwarf mongoose: In Sambaru.
Spotted hyena: In Masai Mara.
Serval: In Masai Mara.
Lion: Sambaru and Masai Mara.
Leopard: Lake Nakuru.
Cheetah: In Sambaru and Masai Mara.
Dugong: Off Zanzibar, Tanzania.
Giant rat: Zanzibar, Tanzania.
Sweden:
Roe deer
Moose
fallow deer
house mouse
red dear
mouflon
Red fox
beaver
lynx
brown bear
marten
Brown rat
two species of vole
Brown hare
European rabbit
Reindeer
1 species of bat
badger
hedgehog
otter
shrew ssp?
Scottland:
Grey seal
wildcat
red dear
Borneo:
Proboscis monkey
sambar deer
marbled cat
sun bear
Common porcupine
Long-tailed macaque
Pig-tailed macaque
bearded pig
otter
maroon leaf monkey
Silvered leaf-monkey
Papua New Guinea:
As I have lived here on PNG my whole life, the list has grown very much, I have recorded very many PNG mammals for being just a "ordinary person", it often dedicades a lot of searching to see many of the species listed below.
Short-beaked echidna: Kemp Welsh River.
Long-beaked echidna: Kemp Welsh River.
Black-tailed antechinus: Monokwari mountains, Vogelkop.
New Guinea quoll: Port Moresby, killed my kids cat
Broad-striped dasyure: In the city of Eboa.
Papuan Planigale: In our garden in Port Moresby.
Giant bandicoot: Port Moresby suburban.
Raffray bandicoot: While hikking in Owen stanley.
Northern brown bandicoot: Very often around Port Moresby.
Doria tree-kangaroo: Probably the mammal that I have observed most times, saw it first time when I was 5 years old, my grandparents often hunted them, the number of sightings has probably passed 25 by now.
Goodfellow tree kangaroo: I saw a single half dead animal on a market in Ako more than 30 years ago, this species is now eleminated in the whole eatern part of PNG :-C, ohhhh god what I hate these stupid hunters.
Grizzled tree kangaroo: Seen in the Monokwari mountains, Vogelkop.
Huon tree kangaroo: Seen in the Huon peninsula, more than 10 years ago.
Vogelkop tree kangaroo: Seen in the Monokwari mountains, Vogelkop.
White-striped dorcopsis: Seen around Lake Sentani.
Grey dorcopsis: Seen daily in markets in Port Moresby, seen a few live ones in plain areas around Port Moresby.
Macleay dorcopsis: Probably the second rarest mammal I have ever seen, saw a single specimen about 15 years ago in a small grass land area a few miles west of Port Moresby, just another species which know is eleminated from the eastern half of the islands.
Agile wallaby: Once common around Port Moresby, I have seen fewer than 10 animals the last 20 years.
Dusky pademelon: A dead animal seen 7 years ago on a market in Port Moresby, and a group of 2-3 animals seen in Wasur NP.
Northern common cuscus: Seen in the Monokwari mountains, Vogelkop and around Sentani city.
Silky cuscus, been able to see three animals of this rare species in different markets, but never in wild state.
Common spotted cuscus: Seen around Sentani city.
Long-tailed pygmy-possum: Seen in the Monokwari mountains, Vogelkop.
Long-fingered triok: Seen in the Monokwari mountains, Vogelkop.
Striped possum: Seen around Port Moresby.
Sugar glider: Seen around Port Moresby.
Painted ringtail: Around Port Moresby and in our garden.
Common water rat: Seen around Port Moresby.
Large leptomys: Rarest mammal that I have ever seen, spotted a single adult specimen while taking a late walk in the Monokwari mountains, Vogelkop.
Waterside rat: Seen in the Monokwari mountains, Vogelkop.
Forbes tree-mouse: Around Port Moresby.
Broad-headed tree mouse: Around Port Moresby.
White-bellied melomys: Around Port Moresby.
Gassland melomys: Around Port Moresby.
Lowland melomys: Monokwari mountains, Vogelkop.
Mountain melomys: Monokwari mountains, Vogelkop.
Black-tailed melomys: Commonest murid of PNG and I have 10 records only from our garden, the total records made would probably be around 50?
Large tree mouse: MonoKwari mountains, Vogelkop.
Chestnut tree mouse: Monokwari mountains, Vogelkop, around Port Moresby and around Lake Sentani.
Grey-bellied tree mouse: Monokwari mountains, Vogelkop.
Mottled-tailed giant-rat: Around Port Moresby.
Eastern rat: Very often recorded around Port Moresby.
Large spiny rat: Monokwari mountains, Vogelkop.
Great bare-baked fruit-bat: Often recorded around Port Moresby.
Greater tube-nosed bat: Around Lake Sentani.
Unstriped tube-nosed bat: Seen more than 10 years ago on the Huon peninsila.
Greater flying-fox: Recorded in mangrove forest east of Port Moresby.
Large melanesian bentwing-bat: Recorded around Port Moresby.