7 DAYS (Manyara,Serengeti,Ngorongoro Creter & Tarangire).

Lake Manyara
Known for droves of thousands of flamingos that feed along the edge of the lake in the wet season. The park is a renowned breeding site for thousands of Pink-backed pelican and yellow-billed stork.
You see myriads of Wildebeest, Zebra, Thomson's Gazelle, Grant's Gazelle, Impala, Cape Buffalo, Giraffe, Hippopotamus, Baboon, Warthog, and African Bush Elephant, Lion, Leopard, African wild cat, spotted hyena, black-backed jackal, bat-eared fox, etc. Cheetah and African golden cat are sighted occasionally.
Tarangire National Park
The park is famous for its high concentration of elephants and baobab trees. From June to November is the dry season visitors can expect to see large herds of thousands of zebra, wildebeest and cape buffalo.
Waterbuck, giraffe, dik-dik, impala, eland, Grant's gazelle, lion, leopard, cheetah, caracal, honey badger, and African wild dog are the common inhabitants of the park. Tarangire National Park is home to more than 550 bird species, the park is a haven for bird enthusiasts.
Serengeti National Park
The Serengeti Park in Tanzania is part of the Serengeti ecosystem of the Mara and Simiyu regions. It is popular for its annual migration of over 1.5 million wildebeest and 250,000 zebra and its numerous Nile crocodiles. Seen in abundance are Masai giraffe, waterbuck, impala, warthog, and hippo. Serengeti is also known for its big 5 sightings.
Ngorongoro Crater
Ngorongoro Area is about 180 km west of Arusha in the Crater Highlands area of Tanzania. It has a large volcanic caldera within the area.
You can spot Black Rhinos, Buffalo, Hippos, Blue Wildebeest, Grant's Zebra, Eland, Grant's and Thomson's gazelles, Waterbucks. Giraffe, impala, topi, oribi, the crocodile is absent. Cheetah, East African wild dog, and African leopard are not seen often.