** Shares of Pets at Home Group Plc PETSP.L fall as much as 16.2% to 198p, top pct loser on FTSE 250 .FTMC index
** The company expects its fiscal 2026 underlying pretax profit to plunge due to rising costs and subdued demand for pet accessories
** Sees underlying profit in its retail business to fall year-on-year in 2026
** "The combination of slower retail LFLs (like-for-likes) and external cost headwinds was increasingly looking a heavy burden for the business to carry into FY26 while still delivering growth" - Jefferies
** PETSP hits its lowest level since January 13
** Currently stock down 9.7%, trimming YTD gains to ~4%
(Reporting by Aby Jose Koilparambil in Bengaluru)
((abyjose.koilparambil@thomsonreuters.com))