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This pose reminds me of the Polynesian traditional wardance called the haka!
Us Aussies see this when the Wallabies (Australian national Rugby Union team) face off against the New Zealand All Blacks..or .the Fiji and Samoan teams.

If you have not seen a Haka performed, then you have missed the most amazing and intimidating sight.

Sometimes you just get lucky! Today my camera had really struggled to get focused shots of Binjai, the most beautiful Sumatran tigress - due to her constant movement, brilliant sunshine and very smeared viewing glass! I missed countless opportunities of wonderful moments with Binjai, but the really smeared glass meant that I could not get clean shots.

Later on, after visiting other exhibits, I found Binjai in another part of the exhibit, where we open viewing.

Here, Binjai is wrinkling her face in this perculiar grimace - this is the Flehmen reflex - the tiger is drawing the scent to a sensitive organ on the roof of her mouth, called Jacobson's Organ.

Many animals have this organ - all big cats, horses, antelopes, zebra etc.

Binjai is checking the status of Ramalon - several drops of urine contain lots of chemical information that describe who and what the animal is - including sex, age and condition of health.
A male big cat will check the urine of a female to determine if she is in heat or not. If yes, the male will not leave the female's side until she accepts him and allows mating.
For big cats, coupling can happen every 20 min or so, for days at a time.

The scent of Isha and Satu is probably still present - Binjai cannot see them of course, but it will take awhile yet for every sign of them is gone.

Melbourne Zoo has a wonderful enclosure for the tigers - it is styled very much as Sumatran rainforest, with lots of trees, and even a pond to swim and play in.

With the wonderful two yo cubs Isha and Satu now sent to Western Plains Zoo, Binjai, 6 yo, and the resident male, Ramalon, aged 13 yo have more time during the day in the exhibit area.

Melb Zoo staff are taking part in a proper preservation program for Sumatran wildlife - not just joining an international captive breeding program (although they do, and that is vital given the parlous state of Sumatran tigers in the wild) - they actively buy back land in Sumatra with the intent to rehabilitate the land as a wildlife preserve, to give animals such as the tiger and the Sumatran Orang-utan a chance to flourish again.

Royal Melbourne Zoo, Parkville, Melbourne, Victoria, Australia.

From Wikipedia, the free encyclopedia

Water in three states: liquid, solid (ice), and (invisible) water vapor in the air. Clouds are accumulations of water droplets, condensed from vapor-saturated air.
Water is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces.
Water covers 70.9% of the Earth's surface, and is vital for all known forms of life. On Earth, it is found mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation. Oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers, lakes and ponds 0.6%. A very small amount of the Earth's water is contained within biological bodies and manufactured products.
Water on Earth moves continually through a cycle of evaporation or transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Over land, evaporation and transpiration contribute to the precipitation over land.

Clean drinking water is essential to humans and other lifeforms. Access to safe drinking water has improved steadily and substantially over the last decades in almost every part of the world. There is a clear correlation between access to safe water and GDP per capita. However, some observers have estimated that by 2025 more than half of the world population will be facing water-based vulnerability. A recent report (November 2009) suggests that by 2030, in some developing regions of the world, water demand will exceed supply by 50%. Water plays an important role in the world economy, as it functions as a solvent for a wide variety of chemical substances and facilitates industrial cooling and transportation. Approximately 70% of the fresh water which is actively handled by humans, is consumed by agriculture.