New film ‘Animal’ sparks attention with intimate scene featuring Rashmika Mandanna and Ranbir Kapoor; controversy and social media frenzy; actress wins acclaim for her performance; audience curious about chemistry between Kapoor and Mandanna; tweet hails Mandanna’s acting; film delves into toxic father-son relationship with emotionally distant father and anguished son; director Sandeep Reddy Vanga satisfied with A certificate for mature audience; ‘Animal’ likened to ‘Kabhi Khushi Kabhie Gham’; Vanga’s second Bollywood film; some complaints about lackluster second half