my dad raises hunting beagles and has for decades and MAAAANNNN, you don't know ingenuity like them!! They kill me with some of their antics!! When he moved he built a new yard for his pack and laid concrete several inches underground and the chainlink boundary 2 separate fences about 3" apart and is embedded in the concrete which is under 6" of dirt. They have half double layer chainlink "open" roof and half double chainlink under shingled roof and STILL try to climb up the chainlink!! LOL
Spay & Neuter your pets, weird friends and relatives!!