It emerged the animals had been wading through water as they searched for food in the Kasadi river where untreated industrial waste from nearby factories had been dumped.
There are claims at least one of the dogs had gone blind and other animals, including birds, had also been affected by the pollution in Navi Mumbai.
Arati Chauhan, who runs the Navi Mumbai animal protection shelter, was the first to highlight the issue.
She told Sky News: “It’s just not dogs. All other animals are being affected by the environment pollution. I witnessed five such dogs. In fact, one of the dogs has gone blind.”
Ms Chauhan said she when she went to survey the area her eyes started burning and she fell sick. She said: “I had to see a doctor and am still recovering.”
She added: “Workers in the factories and security men guarding various factories tell me they have health issues, breathing is a problem, but say ‘We are helpless, we have to work here it’s our bread and butter’.”
There are about 1,000 pharmaceutical, dye manufacturing and food factories in the Taloja district.
A quality check by the Navi Mumbai municipal corporation found the waste treatment of effluents was inadequate.
The level of biochemical oxygen demand (BOD) was 80 milligrams a litre.
According to official guidelines, fish die when the BOD level is above 6mg/l, and a level above 3mg/l makes the water unfit for human consumption.
For years, activists have complained to authorities of indiscriminate dumping of untreated effluents into the river, but to no avail.
Ms Chauhan and her group have now filed a complaint with the Maharashtra Pollution Control Board (MPCB).
Anil Mohekar, regional officer of the board, told reporters they were aware of the complaint, adding: “Discharge of dye into any water body is illegal. We will take action against the polluters as they are destroying the environment.”
One of the industrial units producing chemical dyes has been sealed by authorities.
Ms Chauhan claimed only part of the factory was sealed and not the manufacturing unit.
She said: “It’s all hogwash. How can only one factory pollute the entire area. Hundreds of factories are saving money by dumping toxins in the river instead of sending it to the mandatory common effluent treatment plant.”
The Taloja industrial zone, located outside Mumbai, employs almost 76,000 people and generates billions of pounds a year for the economy.
“Welcome to the world little one… we love you ’cause you’re different,” Tourism Australia wrote on its Facebook page on Tuesday, calling for suggestions on naming her.
She is not albino. Keepers at the zoo say her fur is due to a recessive gene inherited from her mother Tia, who has given birth to other pale joeys – baby koalas – in the past.
“In veterinary science it’s often referred to as the ‘silvering gene’ where animals are born with white or very pale fur and, just like baby teeth, they eventually shed their baby fur and the regular adult colouration comes through,” said the zoo’s wildlife hospital director Rosie Booth.
Facebookers gushed over the “gorgeous white koala” and “precious darling”.
“I wish her a very long happy life filled with lots of love and all the eucalyptus leaves she wants,” wrote one.
So far, they have come up with suggestions including Snowflake, Pearl, Sugar, Lily, Snow White and Baringa, which means “dawn” or “light” in the aboriginal language, for a name.
One posted: “Daenerys…like from Game of Thrones. They have the same color hair and are both beautiful.”
Koalas have been under increasing threat across the Southern Hemisphere nation in recent decades due to bushfires, disease, dog attacks and loss of habitat.
Ms Booth said had the koala been born in the wild, she would have been more visible to predators.
She is one of 12 joeys born at the zoo this season.
Idris Hylton, who is now aged five, wrote directly to the organisation urging it to make the craft and he even offered to fly it into space.
He also said he wanted to be given an astronaut licence.
Idris claimed his rocket would fly faster than any of NASA’s ones.
His letter read: “To NASA, I made a letter for you to report about. This rocket is for you. Please make it and send it to an astronaut in space.
“I will fly my rocket to space for NASA. Please can I have an astronaut licence. From Idris, aged four.”
His father Jamal Hylton, from St Albans in Hertfordshire, said his son “went crazy” when the agency sent a formal letter back thanking Idris for his “great” design.
Kevin DeBruin, a systems engineer from the NASA Jet Propulsion Laboratory, wrote: “Thank you very much for your design of your rocket, it’s great!
“Creating work like this is the start to a great future astronaut who can pilot a rocket. Keep it up!”
He added: “Working with outer space vehicles and equipment takes hard work and dedication. This means you have to be enthusiastic in school to try put forth your best effort every time.
“Continue your interest in outer space, rockets, and all aerospace related things! With your enthusiasm and hard work, hopefully you may contribute to one of NASA’s many exciting programmes in the future.
“Best of luck to you in your journey towards space!”
Mr Hylton told Sky News: “Idris went crazy when it came through the post, phoned me at work shouting ‘Dad, NASA replied’.
“We’ve read the letter together countless times and he’s waiting to get back to school in September to show it to his teachers.
“The best thing is that he’s now set on a career as an astronaut or engineer, and the letter from Kevin DeBruin has inspired him to believe it’s possible.”
He explained his son didn’t get a response from NASA for several months after sending the letter to its Washington HQ.
But then Mr Hylton tweeted the agency directly and Mr DeBruin saw the tweet and asked for more details.
Mr Hylton went on: “He responded to my son with a really motivational letter and NASA stickers.”
Unlike most vertebrates which die within a few minutes without oxygen, goldfish and their wild relatives crucian carp are able to survive for months in oxygen-free water.
Biologically speaking, the fish convert their anaerobically produced lactic acid into ethanol which diffuses across their gills into the surrounding water.
The researchers from the Universities of Oslo and Liverpool have discovered the unusual molecular mechanism behind this unique ability.
They have pinpointed sets of proteins which are normally used to produce energy by channelling carbohydrates towards their breakdown within a cell’s mitochondria.
While one set of those proteins is very similar to what other species of vertebrate possess, the second set is uniquely activated by the absence of oxygen.
Dr Michael Berenbrink, an evolutionary physiologist at the University of Liverpool, said that the blood alcohol concentration in these fish can exceed the drink-drive limit during the winter.
“During their time in oxygen-free water in ice-covered ponds, which can last for several months in their northern European habitat, blood alcohol concentrations in crucian carp can reach more than 50mg per 100 millilitres,” said Dr Berenbrink.
“However, this is still a much better situation than filling up with lactic acid, which is the metabolic end product for other vertebrates, including humans, when devoid of oxygen.”
Lead author Dr Cathrine Elisabeth Fagernes, from the University of Oslo, said: “The ethanol production allows the crucian carp to be the only fish species surviving and exploiting these harsh environments.
“Thereby avoiding competition and escaping predation by other fish species with which they normally interact in better oxygenated waters.
“It’s no wonder then that the crucian carp’s cousin the goldfish is arguably one of the most resilient pets under human care.”