Another houseguest has entered the Big Brother 16 house in order to spice things up, though this one needs a bit of care.

Big Brother 16: Jeff & Jordan Enter The House For Special Engagement Moment

Head of Household: Frankie Grande

Nominees: Cody Calafiore and Victoria Rafaeli

Other houseguests: Caleb Reynolds and Derrick Levasseur

Big Brother 16 Houseguest Frankie Worries He May Be Evicted Before Final 3

The Big Brother 16 houseguests received a special surprise Tuesday morning with the entrance of Izzy, a dog. In a special live feed vote, fans elected to send a dog into the house for 24 hours. Izzy entered the house through the front door and all five houseguests fell in love immediately.

Izzy has been very friendly with the houseguests, kissing them as they hug her.

Meanwhile, Cody dared Caleb to eat dog treats after a discussion in which Caleb said he was going to be on Survivor. Caleb took the dare and ate two treats. At first, Caleb said that they were okay but he soon changed his tune and said they were disgusting.

It has been a very quiet week in the Big Brother house in terms of game, considering it has been a foregone conclusion to the houseguests that Victoria will be sent home this week. Even Victoria seems to know this.

However, they still don't know that pushing the gold button in the Have-Not room last Thursday set in motion the BBRewind. This means that the entire week will rewind to right before the Head of Household competition and the eviction will be cancelled.

The next episode of Big Brother 16 airs Tuesday at 8 p.m. ET/PT on CBS, featuring the Power of Veto competition and the Veto ceremony.

Tags: Big Brother Reality TV CBS