Antenna selection problem
If you know nothing about GPS antennae,  start here

https://www.u-blox.com/sites/default/files/products/documents/GPS-Antenna_AppNote_%28GPS-X-08014%29.pdf?utm_source=en%2Fimages%2Fdownloads%2FProduct_Docs%2FGPS_Antennas_ApplicationNote%28GPS-X-08014%29.pdf

The most popular for pets seems to be the GeoHelix type printed helix copper foil on low loss tangent substrate. .e.g. special FPC substrate