Another park visitor said her dog was spooked, and tried to pull away on his leash. She was able to pull him back, but hundreds of pet owners may not be so lucky.

Darcy "DJ" Cogswell is an adoption counselor for the Nevada Society for the Prevention of Cruelty to Animals. He says holiday celebrations can frighten pets.

"The influx of people, all the extra activity, even the sounds can scare the animals and they might run off," Cogswell said. 

Cogswell says the no-kill shelter gets about 150 calls after the Fourth of July about lost and found dogs and cats.

His advice? Protect your pets by keeping them inside, perhaps with a television on to muffle fireworks noise.

Make sure your doors stay closed.

If pets aren't micro-chipped, make sure they're wearing tags.

If you take pets outside, watch out for fireworks debris they might sniff or eat, and consider backing up a collar with a harness for more control.

Despite the mid-week holiday the NSPCA expects to take in lots of frightened pets.

Cogswell says, "I still think it will be pretty big. There's a lot of people that still have the day off and a lot of people that still celebrate."

After what happened to her dog Rocky, eight year old Isabella Coleman had advice on safely celebrating the Fourth of July with pets safely.

She said, "You don't put your dogs somewhere where the fireworks can hit them."