If you have a few hours to spare, you can become a certified rat tickler for free here: https://www.nc3rs.org.uk/3rs-resources/rat-tickling/rat-tickling-certifi

If you have a few hours to spare, you can become a certified rat tickler for free here: https://www.nc3rs.org.uk/3rs-resources/rat-tickling/rat-tickling-certification https://www.nc3rs.org.uk/3rs-resources/rat-tickling/rat-tick...