London Zoo has unveiled a new art installation made from 15,000 discarded single-use plastic bottles, all of which were collected from London and its waterways. The installation, dubbed the Space of Waste, is 16ft tall and was created by the artist and architect Nick Wood. It houses information about plastic pollution and the small steps that everyone can take to tackle the issue.

Mr Wood commented: "Building this piece with ZSL was a satisfying challenge, as plastic bottles are not usually seen as a building material - recycling them into this structure, which will remain at ZSL London Zoo all summer, was a great way to turn the culprits themselves into a stark visual reminder of the worsening plastic problem in our city." Image David Parry/PAWIRE/ZSL

A new free app will support vital work in clinics caring for stray dogs around the world, experts say. Created by the University of Edinburgh, the tool allows vets to track the wellbeing of dogs going through catch-neuter-return schemes, which are common in countries with large numbers of strays.

Vets say the welfare of individual dogs can be overlooked during the process of capture, transport or surgery. The app, piloted across Asia and Africa, helps staff to monitor welfare, spot signs of distress and develop strategies to improve care. It was launched at BSAVA Congress on Friday 6 April.

Battersea Dogs & Cats Home has revealed that its veterinary team performs dental procedures on more than 170 animals every month. Last year the charity says it extracted hundreds of teeth from more than 800 animals and carried out thousands of routine scales and polishes.

To combat the problem, Battersea is urging pet owners to get regular dental checks at their vets, implement a daily oral care routine, feed a good dental chew and only give toys that are designed for dogs, including gentle rubber toys that are less wearing on the teeth.

Animal charity FOUR PAWS has launched a major new project to tackle the spread of rabies in Myanmar. A team of around 50 people are aiming to vaccinate 50,000 stray dogs across 267 villages across the capital, Naypyidaw.

According to the World Health Organisation (WHO) there are around 1,000 human rabies deaths in Myanmar every year. Authorities often kill stray dogs due to fear of rabies and lack of information. FOUR PAWS hopes its ambitious campaign will show Myanmar and other countries that killing free-roaming dogs is not a solution to rabies. Image VIER PFOTEN

A project to control the free-roaming dog population in Ranchi, northern India, has neutered 70,000 dogs. The milestone was announced by Mayhew International and the HOPE and Animal Trust on World Spay Day (27 February). In recent years, since the project began, Ranchi City has seen a significant decline in the number of human rabies cases caused by dog bites, with no recorded cases in 2017. The project has also educated 381,000 children and adults on rabies prevention, safe interaction with dogs and compassion to animals.

The British Horseracing Authority (BHA) is launching a survey to improve understanding of aftercare for thoroughbreds. The survey has been emailed to trainers, who are asked to share their own experiences, with a focus on life after horses finish their racing careers. It forms part of an equine health and welfare strategy being developed by the BHA.