If you are one of those blessed by god to take care and assist the animals in need. You probably know that there are some physco out there who will try to stop you or worse, even harm you and the animal you are trying to look after.
Its illegal to harm or cause injury to any animal
Sections 428 and 429 of IPC (Indian Penal Code) and the Curelty to Animals Act of 1960 makes it illegal to harm or cause any kind of injury to any animal on streets. Any one caught doing so can be reported to local animal protection group or police. You can also file a case for the same under the said sections.
Its a crime to feed poisonous food to stray animals
Any person caught doing this can be charged under Section 11 of the Prevention of Cruelty to Animals Act 1960, While is valid pan India, except J&K
Delhi High Court states that there are no laws that prohibit people from feeding stray animals
You should know that feeding stray animals not against the law and is helpful towards animals, as it makes it easy for them to stick to one particular area. This is also great way for birth control for strays and their vaccinations.